Elder Kaioshin: “…So he was finally completed…Which is to say…that this current…small Majin Boo…is the initial…mo…most troublesome one…”
Kaioshin: “….Yes…the heart which he gained by going so far as to lower his power through absorption…has returned once again to the way it was…he has no self-control whatsoever…he has become evil itself…”
Power loss is explicitly stating to reduce Buu's power, mean he would be come stronger with the removal of the Kai. No one debates this - so why are we arguing if a Buff+Dai Kaioshinn Buu is stronger than a Pure evil one?
And Vegeta was obviously aware of Gohan and the boys - Gohan was absorbed minutes before he reached Earth, he was at the check in station while Gohan was fighting Buu. If Gohan was on SSJ3 level, Vegeta would have surely sensed him.



