Janemba vs Buu

It really depends on what buu your talking about, fat buu would be beaten as quickly as super saiyan 3 goku was by janemba, super buu's base form would be about even to janemba but janemba might still be stronger, as for super buu with super saiyan 3 gotenks absorbed it would definitely be at least an even fight but i would give super buu the edge here, super buu with gohan absorbed would definitely be alot stronger than janemba which means kid buu would definitely be alot stronger than janemba too. Don't forget the fusion reborn movie was set around the time line when fat buu was still around and when goten and trunks first learned to fuse, i mean why else would goku and vegeta still be dead and vegeta not knowing the fusion technique when he does know it around the time super buu gohan arrived.

SSJ3 Goku and Gotenks could give Fat, Super, and Kid Buu's a decent enough fight, but Janemba's second form absolutely destroyed SSJ3 Goku. It wasn't really even close, Goku's attacks weren't doing much damage, while Janemba was cutting him up and eventually knocked him out.

Now, if we're talking Buu powered by Gotenks or Gohan, than I'm not sure. Buu pwned Gohan about as well as Janemba pwned Goku, but theoretically Gohan should be the stronger, making Buu's feat more impressive...

It obviously depends on what version of Buu we're talking about. Mr. Buu, evil Buu, kid Buu and even fat Buu wouldn't be able to defeat Janemba's final form as far as I'm concerned. However, I would bet on super Buu.

Come to think of it, we can't even compare the performance of Buu saga SSJ3, because Goku claimed SSJ3 is meant for use in the afterlife, which means the only time we see full power SSJ3 is against Janemba.

I'd still assume Gohan is stronger, but it can't be by too much if Goku thought full power SSJ3 could punk Kid/Original Buu, putting the Buu that beat down Gohan a little closer to Janemba's second form than I initially thought...

well it was pretty easy for gogeta to beat janemba and the same goes for vegito and super buu so gogeta>janemba and vegito>super buu but i probably gotta hand it to buu although janemba has some real good tricks buu's regeneration makes up for that cuz janemba doesnt really have strong ki blasts