Goku flat out said Buff Buu is stronger than Super Buu thoughI think his power diminished from the buff firm he got by the burly Supreme Kai prior.
So if Kid Buu > him then that makes him stronger than Super Buu too. That’s where the problem lies
It’s not saying Buff > Kid
Super Buu is just stated to be Fat Buu with a body now fit for fighting, and Krillin didn’t even notice a difference in ki between Fat Buu and Super Buu. Piccolo had to point it out to him, and that’s because he was watching the whole thingAnd that second parts bullshit. Goku was evenly matched with Fat Buu at Super Saiyan 3 and after stripping Super Buu of all the power and skills he got from Piccolo, Goten, Trunks, and Gohan, Goku still admitted he and Vegeta were no match for Super Buu even with just his own power.
So if there’s a gap, it’s not a very big one