Hmm...
I don't see how they can even be compared...even though they are both aliens.
Look at the names, I mean superman is just as the name implies:
Super Man, he is nothing more then that. Goku on the other hand is a f$%#ing god or something. He died so many times I stoped counting, he fought dragons, aliens, robots, androids, gods and even what I think is some sort of bubblegum..
And not only that, Goku trained other people
and has children( and being a father is sometimes harder then destroying a planet!).
So no, superman has no chance against Goku. What will superman do? The guy can hardly lift a plain... Goku sneezes and half the earth gets blown up...
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