Does South Kaioshin limit the gap on Kid and Super buu?

[KyuubiAhri]

So the manga and anime tell us that Buff Buu>Super Buu

However, Buff Buu is only Kid Buu+South Kaioshin, who is weaker than SSJ Adult Gohan

This would put Super a very small amount above Kid Buu, which goes against larger gap presented in the buu arc

Your thoughts?