Superman is such a stupid character. Why would you give someone ALL the powers? It's like 5 year old created him.
So strengthwise they are close, hulk probably has an advantage there, but that's it.
Superman can fly him into the sun, or burn his eyes out with laser vision, or reverse the earth's rotation to make time move backwards until the hulk is vulnerable (as banner) and sneakily kill him.
Or he can simply fucking dodge everything the hulk does because HE HAS FUCKING SUPER SPEED!!!
he's almost as fast as the flash and yet he simply "forgets" to use this power in almost all of his fights. That's how stupidly broken he is as a character. He has to forget to use his own powers in order to make the fights interesting.