Exactly. Hulk was as mad as a hornet by this time in the fight, and couldn't budge Superman. If Supes wanted he could have squashed Hulk like a little green bug
Hulk's the only one with limitless strength. Being that it's limitless there's no one that could be stronger.
Superman, beaten to a pulp and "killed" by a scrub named Doomsday.
Thor, knocked out and out strength-ed more times than anyone can count.
When only one has a maximum strength that's not measurable, it's an easy choice.
Doomsday was not a scrub... He was a genetically engineered Kryptonian.
But that would be an interesting fight... Doomsday VS hulk