OH my God Tomp!! you have to realize that Goku faced way greater opponents than Superman. For example, Cell only killed him because he blew himself up. Plus, even Cell would destroy Superman if you ask me.
Superman gets owned.
A child killed cell. A CHILD.
In Goku's little world he cheats. He dies "He lost" But comes back.
Super man can die, but it took another "EMORTAL" to kill him.
Goku lost ONCE and only ONCE.
Goku psh about 400.
Superman IS WAY FASTER THAN GOKU, he made time flow backwards.
These silly beams psh, they wont even effect him.
I'm sorry this "He's super sayan" dose not make him better, his "super sayan" form is only temporary on the other hand super man never gets tired.