Okay, now that we have all the info, I'm going to go with:
1. Thor
2. Diana
3. Thing
4. Colossus
5. Superman
In most situations I don't think the weight difference would make a difference. I don't remember who it was that talked about the guy at the gym who is 6'6 and 300pounds. If he is not a trained fighter he still gets his butt handed to him because a skilled fighter would know how to turn the weight disadvantage into an advantage. Not to mention that the more skilled fighter probably wouldn't take any blows and would know exactly how to attack.
Thor is another animal though. He is a huge guy that also is a trained warrior. He's the only one on the list that comes close to Diana's skill. Close enough that his physical advantage would remain so. She would embarrass just about everyone else though.