Ya, I can't see why there is even a discussion.
If there is no kryptonite then Superman is completely indestructable.
Plus Superman is MUCH smarter and FASTER (think Flash) and can avoid any I blow the Hulk might try to lay on him.
What if he just carries him into space?
Doesn't Hulk need air?
Hulk can hold his breath for a long time but not indefinitely.
This is just a discussion on strength though.
Hulk is human. Supes isn't. It's really that simple.
Thor is a God. End of discussion. Roy, when someone asks you if you're a god, you say "YES"!
If we're talking 1964, Thor has had trouble taking down the Hulk.
If we're talking today, well, continuity and powers have changed so many times, I don't even know anymore.