I really fail to see the point in Superman even having superspeed. It seems that he only uses it to catch up to bad guys to lay a hit if they are running away most of the time. He rarely seems to use the superspeed the way it would be most effective in a fight. And I'm not talking about flight. To me that should be something else; him being a fast fligher would be okay but it seems like his superspeed goes wasted on land. Really, when does he use it when he should?
That also goes with the problem that Supes does not have a "fighting" style cause he has always just been powerful. Hulk doesn't have a "fighting" style either, but it's suprising how intelligently Supes doesn't use the superspeed always.
I would say Hulk wins cause the chamber's size, and no sun to help Supes get a boost, while Hulk will constantly get his lil boost of anger. But, if...if...Supes actually fights wisely with his superspeed I would vote for him...but I rarely see him actually use it in a fight except to catch up to a bad guy.
Because of this, I'm still undecided.