http://en.wikipedia.org/wiki/Superboy-Prime#Powers_and_abilities http://www.YouTube.com/watch?v=v9IvBgKAAZk&feature=channel_page Regarding the youtube vid skip to 2:20 - as you can see, it took two regular Supermen just to restrain him, and he kills one of them. The Wikipedia article though is wrong; by a technicality, namely the fact that he has no weaknesses, Prime is in fact more powerful than Silver Age Superman, even though he's not as strong. The only version of Superman that can defeat Prime, is the one from D.C. one million. We know, Superman Prime will eventually be defeated, because 1 million years into the future he doesn't exist.
Superman, Superboy, Supergirl, Superdog, they're all vulnerable to magic. Thor is the God of Thunder. He's made of magic. He can easily defeat Superboy-Prime.
super man super man is way stronger and he can fly
superman and spiderman
If the circumstances for both of them are optimum (Vegito at SSJ2, at full health and with a tail and Superman prime fully charged with solar energy, wearing his solar energy collecting suit) Vegito would probably win from Superman prime.
Superman would win.
now the obvious answer to this question is superman. Every one knows that optus prime is helpless to super man. So the answer is superman
Superman would win
If you mean win then Goku would win.
Depends on the version of superman. Most versions of superman win.
Superman
Superman
Superman .