Buhhan was not veggeto lv, He got dominated, how does this disprove anything
Base super buu however got solo'd by everyone, gotenks,gohan and whoever
Kid buu is said as the most powerful enemy. Im sorry but that's just the facts
Narration says kid buu is stronger then the other buus too
The absorptions are directly said to make buu weaker so kid buuu >>> buuhan
It's also said that kid buu is the most terrible and dangerous
Not only that but kid buu fight goku is said the fellow strongest. Just meaning goku got stronger then buuhan since that point