They'd definitely still fight, but it wouldn't be the death matches everyone keeps imagining. Just two ultra-powerful bros finally getting to go all out in a friendly match without having to worry about hurting their opponent or saving the world.
They'd definitely still fight, but it wouldn't be the death matches everyone keeps imagining. Just two ultra-powerful bros finally getting to go all out in a friendly match without having to worry about hurting their opponent or saving the world.
I can definitely see them bonding over their similar origins: Both were survivors after the majority of their race was destroyed, were raised by surrogate human parents, both lost their surrogate parents at a young age (well, depending on the canon Supermans parents are still alive), and both gained their powers from Earth (the sun for Superman and martial arts training for Goku).
I think Toriyama was partially inspired by Superman when writing Goku's origin in Z, although I'm not 100% certain on that.