I'm going with Kun in all 3. The questipnable one is Force, but I think Kun takes that as well(he taught Kyppy them uber Tendrils, implying that he knows how to do it). However, Krayt does have very powerful lightning (in rankings, i consider Sidious, then Vitiate, then Bane, then Krayt/Malgus). And Krayt does have good saber skills, just that he was defeated in sabers, while Kun was never truly defeated in his time as a Sith. And its plausible that if the duel hadn't been interrupted by Ragnos, Kun would have beat Qel Droma.
lemme just sum this up with an excerpt from swtor.com's forums:
I already know exactly what kind of statement is going to be made against this: 'he had enhancements' in the form of his Amulet and his gauntlets.
This is an assumption and not canon, those objects only quickened his corruption to the Dark Side, for a small amount of time they imbued his power, but afterwards their effectiveness dwindled till the point that at his corruption of the Jedi knights and padawans via a holocron, they did nothing for him and he wore them for aesthetics and intimidation factor only.
Exar Kun was very powerful and he did not require the aid of power imbuing objects to enhance this power, by the time of Ulic's capture at Coruscant, Ulic admitted no one person was powerful to face him directly, which is why the entire 10,000+ strong Jedi Order had to turn up and attempt to stop him.
Exar Kun was beyond his duelling skills most infamous for being able to attack someone or multiple persons with a blast of pure Dark Side energy, an energy that even the likes of Darth Bane had no defence against at all and he flopped around like a fish out of water when a Dark Side Tendril severed his arm.
Exar Kun was the strongest user of Dark Side energetic blasts on record, when Aleema Keto attempted to kill him with this ability he simply absorbed the blow and blasted her with a far stronger attack that Aleema only survived by shielding herself with a dark side force bubble that only took the brunt of the attack, it still knocked her unconscious.
Exar Kun showed his total mastery of Force Blast against Gantoris, using it via his eyes instead of his hands, totally incinerating the promising Jedi Knight.
Exar Kun was also a master practitioner of Force Flight able to move at will in a strain similar to Count Dooku.
Exar Kun's mastery of Sith Alchemy and Magics was nothing short of spectacular, he could easily create hosts of Sith war beasts including the dreaded Terentatek, eventually this power was so immense it allowed him to absorb the Massassi species and abandon his body. 4,000 years after this as a Sith Spirit Kun would have used the students of the Jedi Praxeum to rebuild his own body through his alchemy, essentially allowing him to move from the corporeal to the non-corporeal whenever he wished.
His Force Sense was also powerful enough to know his apprentice Ulic Qel-Droma was endangered from half the galaxy away.
Kun's duelling skills are also valid here, as his form relied on Force prowess to be used, he was the most powerful and skilled Niman user on record, taking it to it's highest form, he mastered it to such a degree that he could easily use the force to randomly turn one or both blades on and off mid-combat with no manual button, he could also do the same thing and change the length of each blade as he saw fit, as he gained esoteric levels of power in the Dark Side he threw any type of moderation or balance out of his lightsaber style and incorporated highly proficient levels of Juyo and Ataru(in the form of Force Flight), this was so powerful that masters of Djem-So Vodo Siosk Baas and Ulic Qel-Droma had to stay on the defensive and in one case was totally overpowered and killed(Baas).
__________________ ”You presume limits to my power. There are none.”
I didn't even know half of this stuff. I knew he KOed Aleema and he was the greatest Niman user to date, but I had no idea he could "fly", had some proficiency in Juyo and Ataru, and that the amulets technically didn't give him a power boost (or a noticeable one).
Yeah, Dooku had a similar ability, as shown in the Original Clone Wars series. I understand the amulet thing, as Palpatine said, the trinkets are a stepping stone to gain ones true power. In this situation, Kun would need the amulets to amplify his power, however as he kept using them he gained a mastery over them to an extent that the amulets barely gave a power boost.
__________________ ”You presume limits to my power. There are none.”
Well, let's see. It's no where stated, but implied. As said, he mastered Niman to the point where he would have no moderation or balance when he battled, and he used elements of Juyo and Ataru when fighting his opponents because of this. Further showing his removal of moderation was when he overwhelmed and killed the likes of Baas, and put the likes of Baas and Droma on the defensive when he fought, signaling an extremely aggressive fighting style.
__________________ ”You presume limits to my power. There are none.”
He could be using Shii Cho, Shien or Djem So. Those styles are also highly agressive. In fact, in the hands of masters, Shii Cho was highly randomized and unpredictable. Shien was more for blast deflection, but heck, we have Galen Marek with his dueling "Sith Shien" nonsense. And Djem So was all about completely overwhelming your opponent with powerful attacks. But I see your point.
They're highly aggressive, but he was also very acrobatic when he fought, and frequently used kicks and what not. This leads to the conclusion that he used Ataru and Juyo.
__________________ ”You presume limits to my power. There are none.”
I'd go Krayt, especially if we're talking sans armor.
Krayt:
Destiny: 3 Force: 10 Dark Side: 20
And lemme guess, they're all level 20?
Though the stats in the KotoR guide sound better than the Legacy ones (Krayt- str 14 and wis 20! That makes no sense! Grand Master Kol Skywalker's a level 14 Jedi! Darth Nihl, str 11! I think the stats were made based on early notes or something, it came out fairly early in the comic's run).
They really aren't. Some of the stats are ****ing retarded. Like, ok, I know people don't think the Exile is amazingly powerful or whatever because stupid, but it makes no sense for her to only be level 15 while Traya and Sion are level 20 and 19. She beat both of them! She beat Sion five times in a row for gods sake! And she doesn't even get 1 level in Jedi Master? You become a Jedi Master in the game when you go to that cave. You actually get levels in Jedi Master in the game. Though she does have good stats for her level.
Also Malak has 20 Charisma. Lol, yeah because he just oozes personal magnetism.
Also all the Sith are horribly overpowered and the Jedi all suck. The only good Jedi is Uliq. And even he is kind of crap. Why not have Nomi? Or Thon or whoever.