First of all, this is a pretty good animation. The concept was interesting, and the animation was smooth. Overall, nice job, except you should have done more to distinguish the characters. Now, being not a huge fan of DBZ or DC, I would have to say superman would win. He has super speed, is invincible unless exposed to kryptonite (which i'm pretty sure is a hard substance to find), and has powers on the same level as Goku. Since Goku isn't invincible, I would assume superman would eventually beat him down unless Goku somehow found some kryptonite on the way there. I think this may be overkill, but i can't take how stupid the argument is. That's all.