User blog comment:So-Pro Warrior/Nostalgia Tournament: Vegeta (Dragonball Z) vs Iron Man (Iron Man the Animated Series)/@comment-4555900-20120411025030

Vegeta without going into Super Sayian would probably be able to best Iron Man in most cases, unless Iron Man goes full power with the Bleeding Edge, in which case, Super Sayian mode instantly wins the fight. Not even counting Super Sayian 2 here, or Super Sayian 4 if you want to count Dragonball GT as canon. This isn't a fair battle, plain and simple.