he said "fight hard kakarot. your number 1". if you paid attention, vegeta is alot less technical and less skilled at advancing his power. who discovered mastered ssj? whos the ssj3 here? vegeta says many times goku is a genius and has no weaknesses. he once thought goku was so strong because he had a family. but in the speech, vegeta says its because goku fights only because he must not lose and always pushes his limits. vegeta was so blinded by arrogance that it blinded him from the truth. he would never catch up to goku. goku was the best fighter in the universe.
look at their respective battles with cell. goku matched cell move for move, technique for technique. vegeta fought sloppy and used the same old punch punch punch ki spam ki spam ki spam. piccolo even said vegeta was sloppy because of anger. goku never loses his head like that.
because in this scenario it is Vegeta who turned into a Super Saiyan and not Goku, meaning their positions in power have been switched. Vegeta wins.
no it hasnt. in this scenario, vegeta transformed instead of dying. he is the same base power as when he died on namek. no switching was allowed.