there is a clear difference between Kaio Ken, and Babidi increasing Vegeta's powerAs if Goku ain't have power ups from one of his cadre of Trainers throughout the series.
After he jacks their techniques.
one is using your skill and own abiltiesto use a technique. the other is relying on someone to aid you.
you nikkas are contradicting yourselves by saying Goku took a L for needing others. Yet Vegeta needed Babidi to tie Goku in SS2 which wasnt him at his most strongest(SS3)