Just thought about it (and was reading some Avengers stuff since I am in a debate with ABHI and RAO) Thing usually looks a lot better in a fight against Hulk than Ironman. Ironman has some showings physically when he does well but Things is more consistent. Some writers think of Thing as a major hitter physically in some books. I can see where some would put him above Ironman physically...I guess I was basing my judgment off of the many upgrades Ironman has recently received.
Also, Ironman hits was doing next to nothing to a Worthy Grey Gargoyal...I can't see Thing being so 'useless' (Tony had to expend all of his power to get off a successful attack).