Since when was fusion an additive powerup? It was always a multiplication effect, just the factors being different (Potara > fusion dance > Buu absorption)
Buu himself said the power boost was additive. It’s not fusion at all
Gohan held his own against Buu with Gotenks AND Piccolo. He was obviously outmatched, but he didn't just roll over.
No he didn’t lol
He got manhandled the entire time by a Buu who was intentionally dragging it out because he wanted to have fun. Dende had to heal him too
Not only that, when Gotenks diffused, Buu still had Piccolo and individual Trunks/Goten. And Goku thought this version of super Buu would easily lose to Gohan.
Those guys are much weaker than Buu or Gohan, so how does that help your case?
Buutenks is 1 (Gotenks) + 1 (Buu) + 0.001 (Piccolo)
All this shows base super Buu is neg diff material for Gohan.
The entire narrative here was that Gohan wanted to play around, and that cost him everything.
More like he’s around 70% as strong as Ultimate Gohan, which is still a large enough gap to overwhelm him but still below 2x his strength
SSJ3 Gotenks- 70
Super Buu- 70
Ultimate Gohan- 100
Buutenks- 140
Buuhan- 170
Vegetto- far beyond 170 to an unknown but high degree
This is actually supported in the manga. Buu’s power boosts aren’t mutplication
Gohan wasn’t playing around in that fight either, that’s something anime filler made up. His mistake was letting Gotenks fight right after (at that point Gohan wasn’t taking it seriously)