When proposed to me yesterday my take was "Superman would win hands down." My reasoning was that Superman would fly the Hulk into space & either let him float away or throw him into the sun.
I just received a text and I quote: "Except that the hulk would whup supermans azz before he got 50ft in the air..."
Personally I don't think Hulk is fast enough to stop something faster than a speeding bullet and - if he was - Superman only needs to stun him to have enough time to pick him up & fly him out.
I just wanted to know if there were any takers who wanted to weigh in on this.