Kid Buu vs Buuhan

Started by Galan0073 pages

Dai Kaioshin didn't hinder Super Boo, so no, that wouldn't be a good argument.

What about this?

http://www.mangafreak.eu/read/dragon-ball/508/13

^ That 'Ultra Boo' scene still makes me scratch my head.

South Kaioshin was no longer incorporated within Boo, so I don't know why he would briefly revert into Ultra Boo when he degraded into Pure Boo..? Perhaps that was just Akira's half-assed/rushed way of corroborating KibitoKai's subsequent story that Pure Boo had killed and/or absorbed the previous Kaioshin eons ago..? /shrug

The entire Boo arc was a jumbled mess. 😘

It's possible that Ultra Boo and Kid Boo could be more powerful than Super Boo. When Vegeta removes the Fat Boo he thinks it will mean Super Boo(the Boo he was talking to) will either become the Fat Boo or presumably the Dark Boo(or maybe it is a joke on weight since Vegeta can't really know about Dark Boo). Instead the Boo they were addressing, Super Boo at the time since all the kids and Piccolo were removed, loses the good kai that might be holding him back thus turning him into the pure evil Kid Boo. The Boo Goku and Vegeta had been talking to prior to the Kid Boo mode was not Buuhan but Super Boo.

So while this might indicate Kid Boo is stronger than Super Boo, it really shouldn't mean anything related to Buuhan. Buuhan had Gohan's strength(the strongest non-fused character as per Akira himself) and Piccolo's technique so he has overwhelming positives over Kid Boo. Goku was absolutely not going to fight Buuhan but felt pretty confident in fighting Kid Boo, which wouldn't make sense if the latter was stronger than the former.

Right, that's what I was thinking along the lines of.

Tbh, I still can't get over how thin buu absorbing fat buu makes super buu but when fat buu is removed, thin buu is kid buu.

Also, Toriyama has stated everytime that Gohan was the strongest z warrior that isn't fusion. This is after Goku fights Uub. The problem with Gohan is he can't release his energy, but he has always been the strongest.

He had a power level of 710 at 5 years old and nearly killed Frieza a year afterwards.

Buuhan will always be the strongest villain. Even vegito was barely a match.

Originally posted by AuraAngel
It's possible that Ultra Boo and Kid Boo could be more powerful than Super Boo. When Vegeta removes the Fat Boo he thinks it will mean Super Boo(the Boo he was talking to) will either become the Fat Boo or presumably the Dark Boo(or maybe it is a joke on weight since Vegeta can't really know about Dark Boo). Instead the Boo they were addressing, Super Boo at the time since all the kids and Piccolo were removed, loses the good kai that might be holding him back thus turning him into the pure evil Kid Boo. The Boo Goku and Vegeta had been talking to prior to the Kid Boo mode was not Buuhan but Super Boo.

So while this might indicate Kid Boo is stronger than Super Boo, it really shouldn't mean anything related to Buuhan. Buuhan had Gohan's strength(the strongest non-fused character as per Akira himself) and Piccolo's technique so he has overwhelming positives over Kid Boo. Goku was absolutely not going to fight Buuhan but felt pretty confident in fighting Kid Boo, which wouldn't make sense if the latter was stronger than the former.

All that scene proves to me is that Ultra Boo > Super Boo(which no one has contested, afaik.) It doesn't allude to Pure Boo being > Super Boo at all, imo.

Where Super Boo and Pure Boo are concerned, it's like I said earlier(and like you mentioned in regard to Boohan):
After Boohan reverted back into Super Boo, Goku outright stated that Super Boo was still FAR more powerful than he or Vegeta--to the point that he thought it would be suicide to even TRY and fight him. This means the difference between them must have been massive, otherwise Goku would have undoubtedly wanted to 'test' himself against Super Boo.

Conversely, even at far less than full power as SSJ3, Goku was still able to have an extended battle with Pure Boo before SSJ3 burned him out. This implies their powers were ~ equal initially, which heavily alludes to Super Boo's superiority over Pure Boo. Moreover, both Goku and Vegeta were confident that Goku would be able to obliterate Pure Boo rather easily IF he fully powered up as a SSJ3(which, unfortunately, he wasn't able to do at the time.) This, again, heavily alludes to Super Boo's superiority over Pure Boo.

So yeah, I definitely think Super Boo > Pure Boo when we look at the big picture, but that's just my opinion. /shrug

Anyway, Boohan was undoubtedly the most powerful version of Boo to ever exist in the mythos... He even says as much:
http://i.imgur.com/DaNTNzu.jpg

The notion that Pure Boo was > is just wank at its finest, imo.

Originally posted by Galan007
facepalm Goku also told Piccolo that he couldn't have beaten Fat Boo as a SSJ3 after they fought. It was only much later in the arc that we learned he was lying/feigning weakness, in order to give the new generation a chance to step up as protectors of the earth. Truth be told, he could have destroyed Fat Boo easily. Point being: the comments you mentioned don't mean much in the way of legitimately trying to power-scale.
This is faulty logic since you can use it to dismiss ANY statement made by any character who has expressed two different positions on the same issue. Unless we’re explicitly given reason to believe Gok and Vegeta were “lying” about Kid Buu at the end of the arc, we are to accept their observations.

Especially with the evidence we do have, which heavily implies that Super Boo > Pure Boo.
I’m intimately familiar with what you refer to as evidence. It’s not much. It all hinges on believing that Goku is stronger than Kid Buu. Take that out of the equation and your arguments crumbles. Fortunately, we have statements and observations to look to that demonstrate Goku was not stronger than Kid Buu. Goku and Vegeta’s aforementioned observations at the end of the arc are the best examples. Observations you seem to suggest that we disregard based on the unsupported idea that that they’re lying or are otherwise unreliable.

a.) After Boohan reverted back into Super Boo, Goku outright stated that Super Boo was still FAR more powerful than he or Vegeta--to the point that he thought it would be suicide for them to even TRY and fight him.
Yes, he did. In regards to Kid Buu, AFTER the fight is over, Vegeta tells Hercule that if Kid Buu comes back, it really will be the end of the world. Goku responds by saying that they’ll train so that they can’t lose next time. This is a clear acknowledgment of their inferiority.

b.) Both Goku and Vegeta were confident that Goku would be able to obliterate Pure Boo rather easily IF he fully powered up as a SSJ3(which, unfortunately, he wasn't able to do at the time.) This still heavily alludes to Super Boo's superiority over Pure Boo.
Yes and Vegeta was confident he could beat Cell. Cell was confident he could defeat Gohan. Since when do we take into account sentiments made prior to a fight while disregarding every statement/observation made during and after the fight? By your reasoning, ASSJ Vegeta (Cell Saga) > Perfect Cell. Vegeta (Frieza arc) > Final Form frieza. Nappa > Goku, etc etc etc.

As we see from statements/observations made during and after the fight, they underestimated Kid Buu multiple times and nearly paid for the price for it.

c.) Even though he was operating at far less than full power as SSJ3, Goku was still able to have an extended battle with Pure Boo. This implies their powers were ~ equal initially... Which, again, heavily alludes to Super Boo's superiority over Pure Boo.
Not remotely. Goku says that Kid Buu is dragging the fight out on purpose and having fun. He points out that he thought he’d do better against Buu and that they ought to have used the potara rings. This takes place immediately right after everything you’re saying.

That and both Gohan and Gotenks were stronger than Goku, yet Goku thinks they all need to train just in case Kid Buu ever comes back, so unless you’re suggesting this unseen SSJ3FP is beyond Gohan, Gotenks and the spirit bomb, it’s immaterial.

To me, those facts hold more weight than nonchalant comments made after the battle was over
Which is totally your prerogative, but I don’t believe one should disregard statements/observations unless we are given explicit reason to do so. Otherwise, your interpretations are ultimately nothing more than a reflection of your own preconceived biases.

That said, even if we assume that Oob went into the Tournament with the exact same power as Pure Boo, he was still human.
We’re not making that assumption at all. What we are doing is using Goku’s statements to gauge how powerful Kid Buu had been during their fight 10 years ago. Evidently, Goku with 10 years of additional training thinks he might lose.
In all likelihood, Goku was just hyped to fight a Boo-level opponent, because no other being with that type of power was still interested in fighting, and/or they just weren't powerful enough to challenge him...
Except Goku had made the request for Kid Buu to be reborn some day back when Gohan, Gotenks and Trunks were at their peak, so it really doesn’t add up if he already has “stronger opponents” to fight.


Goku also told Piccolo that he couldn't have beaten Fat Boo as a SSJ3 after they fought. It was only much later in the arc that we learned he was lying/feigning weakness, in order to give the new generation a chance to step up as protectors of the earth.

Huh? But isn't this literally the same basis you base pre-ROSAT SSJ1 Gotenks >/= SSJ3 Goku on?

Originally posted by Galan007

The notion that Pure Boo was > is just wank at its finest, imo.

Not really. Overpowering the spirit bomb is a pretty compelling reason to believe Kid Buu > All. Not wank, just facts. Compared to when Gohan and company gave their ki away, the spirit bomb is well over two times larger when the entire each gives ki. Logically, doubling Mystic Gohan's ki would put him over Gohan Buu, so yeah . . .

Granted, I tend not to bother with this argument since it involves comparing the size of two different images drawn by the author (spirit bomb before and after the earthlings gave their ki). Still, the idea that it's simply 'wanking' to think Kid Buu is the strongest is silly. In my experience, the wanking comes into the picture when people start making up reasons to suggest that the genki dama doesn't in fact operate the way the manga says it does.

Originally posted by Dark-Kenshin
Not really. Overpowering the spirit bomb is a pretty compelling reason to believe Kid Buu > All.
...Then Goku goes SSJ1, and *poof*, Pure Boo is easily overpowered and destroyed by the Genki Dama. IOW, Pure Boo was obviously NOT superior to the Genki Dama. Not even close.

The rest of you response(can't quote it) is... Fallacious, to say the least. You're essentially saying that we should completely ignore the numerous pieces of evidence I mentioned, in favor of the few cherry-picked statements you referenced. Obviously I cannot agree with that type of logic.

Originally posted by NewGuy01
Huh? But isn't this literally the same basis you base pre-ROSAT SSJ1 Gotenks >/= SSJ3 Goku on?
I have never referenced that as fact... I've actually argued against it several times, in fact. The only thing I have used to definitively compare the difference between Gotenks and Goku, is Super Boo.

Originally posted by Galan007
...Then Goku goes SSJ1, and *poof*, Pure Boo is easily overpowered and destroyed by the Genki Dama.

IOW, Pure Boo was NOT superior to the Genki Dama. Not even close.

Back in highschool, I max-benched somewhere around 200 pounds. I could only do one-rep at that. If someone slipped two 2.5 pound weights on each side, I simply couldn't rep it.

Same goes for Kid Buu. He was struggling with all of his might, but managed to overpower the genki dama. The genki dama was about close to his max. Goku adding the ki from SSJ killed it. If simply being tired was the issue, Goku wouldn't have even needed to use SSJ. His base could have gotten the job done post-recharge.

You're essentially saying that we should completely ignore the numerous pieces of evidence
Nah, I'm not saying that. My Perfect Cell analogy covers this pretty well. You want to accept what happened before the battle, but not during and afterwards. Your argument isn't dependent on numerous pieces of evidence. It all hinges on Goku being stronger than Kid Buu. That's it. Remove that plank (which statements/observations readily do) and it falls apart.

Originally posted by Dark-Kenshin
Back in highschool, I max-benched somewhere around 200 pounds. I could only do one-rep at that. If someone slipped two 2.5 pound weights on each side, I simply couldn't rep it.

Same goes for Kid Buu. He was struggling with all of his might, but managed to overpower the genki dama. The genki dama was about close to his max. Goku adding the ki from SSJ killed it. If simply being tired was the issue, Goku wouldn't have even needed to use SSJ. His base could have gotten the job done post-recharge.

When was it stated that Goku added his energy to the Genki Dama after being recharged? So far as we know, all he did was use said energy to help him push the Genki Dama toward Boo more forcefully. Until then, it simply wasn't able to make full/proper contact with Boo, because Goku's weakened base form wasn't powerful enough to push it into him hard enough *giggity*... But as evident by the fact that the Genki Dama instantly erased Boo once proper contact was made, he was obviously NOT superior to it. srsly

And since you earlier claimed that you believe Pure Boo>Boohan, what evidence do you have that the same Genki Dama would have killed Boohan..? And why on earth would you think additional absorptions(excluding the original Dai Kaioshin, who was a one-off) inextricably made Boo's original form weaker..?

Originally posted by Dark-Kenshin
Nah, I'm not saying that. My Perfect Cell analogy covers this pretty well. You want to accept what happened before the battle, but not during and afterwards. Your argument isn't dependent on numerous pieces of evidence. It all hinges on Goku being stronger than Kid Buu. That's it. Remove that plank (which statements/observations readily do) and it falls apart.
No, your Cell analogy is meaningless, because it wasn't *just* a statement from Vegeta. You forget that Goku also AGREED with Vegeta's assertion that FPSSJ3>Pure Boo... That's why he tried powering up in the first place. srsly

No, everything I mentioned IS evidence... Substantial evidence, at that. You're just opting to ignore it in favor of wanking Pure Boo with a few cherry-picked statements. But if that's your prerogative, then go ahead. Obviously your opinion is not going to change. /shrug

Originally posted by Galan007
When was it stated that Goku added his energy to the Genki Dama after being recharged? So far as we know, all he did was use said energy to help him push the Genki Dama toward Boo more forcefully.
No, that's exactly what I'm saying. The problem is that you're suggesting the spirit bomb was already good enough overwhelm Buu on its own independent of Goku. For example, you say:
Until then, it simply wasn't able to make full/proper contact with Boo, because Goku's weakened base form wasn't powerful enough to push it into him hard enough *giggity*... But as evident by the fact that the Genki Dama instantly erased Boo once proper contact was made, he was obviously NOT superior to it.
Since when do ki attacks operate in this fashion? Can you show me any other instance in the series in which one is able to push back against a blast that has more ki that has more ki than they do? I don't think so.

If the spirit bomb was simply some giant hot potato waiting to explode, why was Kid Buu struggling to push it back in the first place? Why is Goku able to overwhelm Buu after going SSJ? Wouldn't he need to reach SSJ3FP as you suggest? Why is there remotely any degree of force at all that a weakened base Goku can output to make Kid Buu struggle?

Very simple. Ki blast struggles are always won by the side that is emitting more ki. It's why Frieza can't even budge the spirit bomb in his 50% state despite Goku claiming to be just about out of ki; the spirit bomb was overwhelming him on its own. It's why Kid Buu isn't able to destroy the spirit bomb with a quick kamehameha despite Goku being out of energy. It's why we see Kid Buu struggling to push the bomb back. It's not a matter of pushing hard enough, but a matter of who has the greater ki output. The spirit bomb was close, which is why Kid Buu was struggling with all his might, despite a weakened base Goku pushing it. Once Goku was recharged and went SSJ, he had enough (though incidentally needed to be healed by Dende after the fight).

And since you earlier claimed that you believe Pure Boo>Boohan, what evidence do you have that the same Genki Dama would have killed Boohan..?
The size of the bomb when Gohan and company gave their energy compared to the size of the bomb when everyone gave their energy. Mystic Gohan x 2 > Gohan Buu, since Goku told Piccolo Buu that Gohan could handle him.

And why on earth would you think additional absorptions(excluding the original Dai Kaioshin, who was a one-off) inextricably made Boo's original form weaker..?
Nah, the additional absorptions made Super Buu stronger, so I'm not really sure what you're suggesting. As far as weakness is concerned, however, the only two souls that are said to have the effect of having weakened Kid Buu are the South Kaioshin and Dai Kaishin's soul (Viz Translation, Volume 34, page 80: . . . So the souls he ate tamed, then this small boo is the very first most difficult one - Old Kai).

No, your Cell analogy is meaningless, because it wasn't *just* a statement from Vegeta. You forget that Goku also AGREED with Vegeta's assertion that FPSSJ3>Pure Boo... That's why he tried powering up in the first place
Yes, and then we get different statements and observations afterwards. So, just like with Vegeta, Android 16, and Trunks, their initial sentiments are at odds by later ones. As is the case with Kid Buu, they hadn't yet seen the full extent of Cell's power. Pretty standard plot progression. No contradictions. No cherry picking. Just facts.

You're just opting to ignore it in favor of wanking Pure Boo with a few cherry-picked statements. But if that's your prerogative, then go ahead. Obviously your opinion is not going to change. /shrug
I have no particular fondness for Kid Buu (or any character post-frieza arc). I'm simply telling you what the manga says. You accuse me of "wanking" and 'cherry picking' for doing just that. How droll.

Even more interesting, however, is the difference in our conclusions. You conclude Super Buu > Kid Buu and acknowledge that your conclusions require that we disregard statements and observations made by the characters. I, on the other hand, maintain that Kid Buu > Super Buu and do so without acknowledging this idea has contradictions, much less a need to disregard parts of the manga to have this viewpoint.

Everything you've said about Super Buu is all well and dandy. Gohan > SSJ3 Gotenks > Super Buu > SSJ3 Goku. Everything you said that regards what happened prior to the fight with Kid Buu is also fine (with the exception of that stuff about Dai Kaioshin, since the manga says otherwise). Goku and Vegeta say Kid Buu is puny and they can take him. Goku comes into the fight with Kid Buu and does well under the circumstances. He says he can beat Kid Buu at full power. All of this is well and good. What part of it have I ignored precisely? I'm talking about what happens afterwards. Everything afterwards leads us to a much different conclusion. One you don't wish to accept for some reason.

Like Cell and Frieza, Toriyama had the heroes underestimate Kid Buu initially at their own peril. Like Cell and Frieza, Toriyama had Kid Buu slowly unearth his true power. And like Cell and Frieza, Toriyama had the good guys overcome this latest threat by the skin of their teeth. All of this makes perfect sense as it's what the author tends to do.

Here's the thing: I've had this debate dozens of times. There isn't a single thing you could tell me that I haven't shot down before. I don't expect you to change your mind, though I will welcome any actual counter-arguments. Instead of telling me to ignore what the manga says (while also accusing me of doing so for some reason), try to incorporate what the manga says into your argument. Specifically, try to explain why Goku and Vegeta's statements mean something other than what they appear to mean. Try explaining why 50% Frieza is powerless against the spirit bomb thrown by a weakened Goku, but Kid Buu is able to push a spirit bomb with at least 2x Mystic Gohan's ki back. Do that and we have a debate! Or don't. Your choice.

Originally posted by Dark-Kenshin
There's nothing to indicate that this was the reason Vegeta was scared and plenty to indicate that it wasn't. By that logic, Goku's solution (train hard so they'll all be ready) is meaningless as Fat Buu can get angry any time, bring Kid Buu back and destroy the planet without a moment notice regardless of whether everyone trains. By saying they need to train, he's acknowledging that none of them are strong enough to deal with Kid Buu outright at that time.

Uub was not as powerful as Kid Buu as a result of not knowing how to use ki or any of his other powers (which is what Goku notes during the fight and why he goes to train him), but you're missing the point. Goku came into the fight with the impression that he was going to fight the equivalent to Kid Buu. With that mindset, he tells Hercule that he might not make it to the final round in order to "let Hercule win." He tells Vegeta that this unknown fighter is actually going to be a challenge despite being an earthling.

All of this is said despite Goku having trained the last 10 years, thus dispelling any notion that Goku could have won 10 years ago. That's what the Super Buu > Kid Buu arguments are premised upon. That Goku acknowledge being weaker than Super Buu, but thought he could beat Kid Buu, therefore making Super Buu stronger. Only Goku changes his mind about Kid Buu, realizing that he had greatly underestimated him.

We are taking every showing and statement in the arc into account. Everything you said is well and good (numbers aside), except the entire idea of Kid Buu being weaker clinches on Goku thinking he can win against Kid Buu. Then, for one reason or another, you seem to disregard every observation, showing and statement provided after the beginning of the fight. It's like concluding that Cell is weaker than Cell Saga Vegeta because Android 16 said that his sensors indicated that Vegeta was stronger. Obviously, the remainder of the arc proves otherwise. So too is the case with Kid Buu. Mid-fight, you've got Goku realizing that Kid Buu is dragging the fight out on purpose and is simply having fun (which ends up going as far as Kid Buu even toying with Hercule).

Also, lets refrain from using any numbers (i.e. SSJ3 = 8x boost to SSJ1). Not only are they not relevant, but it's just guesswork. Power levels and base multipliers stopped have any significance a long long time ago.

Except I have my copy of the Viz translation with me at hand. Where in the last manga volume does Vegeta "explicitly" say that Kid Buu was weaker than Super Buu? Goku and Vegeta comment on how puny he is. Vegeta also removed the fat buu from Super Buu with the impression that it would make him weaker. This is then contradicted as both Goku and Vegeta observe that Buu's ki actually rises as a result of removing Fat Buu.

Goku controlled the spirit bomb just fine against a 50% Frieza and he explicitly said he was out of ki then. In this case, Kid Buu was simply so strong that he needed his ki in order to finish the job.

The amount of ki, in the spirit bomb, however, is very relevant. After receiving ki from Gohan, Piccolo, Goten, Trunks and variety of other characters, it's explicitly noted that this ki isn't enough, hence why they end up needing Hercule to beg the entire planet for their ki. If we are to follow your logic, that amount of ki ought to have been sufficient (since it included Mystic Gohan's), Goku could have thrown it then and we could've cut straight to the scenes with the dragon restoring his ki back to normal levels.

Jesus, this is ridiculous. You're just arguing against my individual points, for the sake of argument. You still have no basis to what you're claiming here. You "debate" like a five year old.

1. Um, nope. Goku said they needed to train. Which makes sense, as several of the fighters were already superior to Kid Buu, yet Kid Buu still managed to blow up Earth. Goku just said they could train and stop Kid Buu if he showed up again. They would have been training their asses off, even if it was just fat Buu that they managed to beat. Your point is irrelevant. 👇

2. Uub was not as powerful as kid Buu, because Uub was not as powerful as kid Buu, plain and simple.

And again, Goku's statement relies on him being weaker in base form than Z Goku was in SSJ3. This has been thrown out the window, as base Goku in Super is several times stronger than SSJ3 Goku in DBZ, if not hundreds of times stronger than him.

Meaning that once again, you've made a point that is completely irrelevant/useless, as going by your logic, "previous statements < current statements", right?

3. Your comparisons are completely unrelated. Not only is there absolutely zero evidence of Kid Buu being superior to any Buu other than Fat Buu, but you're using an example of an android's power sensor, which was unable to sense Cell's power because he was keeping it suppressed.

Kid Buu was dragging the fight on because Goku's SSJ3 power runs out so quickly, and Goku couldn't deal enough damage to finish him off. Goku even stated that the only reason he couldn't kill Kid Buu though was because he didn't have enough experience using SSJ3 while he was alive, and it took too much energy compared to when he was dead. That is all. Again, your point is completely meaningless to this argument.

4. Clearly not. Bearing regeneration, a character with a higher power level will almost always defeat a character with a lower power level. It's that simple. And the multipliers I used are official.

5. Vegeta not only said that Kid Buu was a midget, and they should be able to handle him, but he and Goku both stated that it was at least worth trying. When they were faced with base Super Buu, both Goku and Vegeta admitted there was absolutely nothing they could do to him. Again, more proof that Kid Buu < Super Buu.

6.Um, yeah? Frieza wasn't strong enough to even struggle against a spirit bomb, considering, you know, he wasn't anywhere NEAR as strong as any of the Buu's. Obviously.

And yeah, Goku needed his ki to overpower Kid Buu's grasp on the spirit bomb. But Frieza wasn't strong enough to even push back the spirit bomb. Your whole argument here is that Kid Buu is stronger than Frieza... Which... Should be pretty obvious.

7. Wrong. The spirit bomb only took small amounts of ki from Gohan, Piccolo, Goten and Trunks. Such a small amount of ki, that they were all still able to feel Goku and Kid Buu's fight from across the entire universe.

And one last thing-

Goku wouldn't have mentioned this if he wasn't fully confident that Gohan OR Gotenks would have beaten Kid Buu by themselves. Because, you know, Saiyan's fight alone? Well, this scan proves that even SSJ3 Gotenks > Kid Buu, so that immediately proves that Kid Buu is either equal to, or weaker than Super Buu. And as we all know, Buutenks >>> Gotenks, Buutenks > Gohan, and Buuhan >>> everyone other than Vegetto.

So yeah, Super Buu > Kid Buu.

My stance here is that Super Buu is far and away superior to Kid Buu so that may make what I'm going to say seem biased but I noticed 2 things very wrong with what DK thinks about this.

1. Gohan did not give all of his power to the Spirit Bomb. He gave a small amount as did everyone else on Earth. Had he given all(or even most) of his power he would have been tired and visibly strained. He wasn't. And if you look at the dialog, Goku asked the people of Earth to give a little bit each. No reason to assume Gohan gave his all.

2. Piccolo is the child/reincarnation of King Piccolo much like Uub is of Buu. Piccolo was a bit stronger than KP in maybe 3 years time. After 10 years Piccolo would have killed KP by breathing too hard. Point is that just because Uub was Buu reborn doesn't mean Goku thought he would be a carbon copy of Buu's power. He likely assumed Uub would be more powerful as the absolute only time he's witnessed something like this in the past was Piccolo shitting on his former self in power

Plus Goku likes to fight and the only two beings on Earth that were stronger than him(Gotenks and Gohan) don't like to fight or are too silly to spare with. Uub was his only hope of a challenge without putting the world in danger.

Anyway that's my 2 cents. Carry on