On the strength thing...
Is Spider-Man screwed against Rogue? No. He might lose, but it would be a decent fight. Is Cap screwed against Spidey? Maybe. But give him an arsenal of various grenades, a protective suit of armor, and maybe a lightsaber...and he's doing just fine.
No one's going to romp through the tourney because of their strength. Khell and myself (unfortunately) demonstrated that in the herald tourney. It got us some wins, then we lost to the speedsters and magic users. Now, there's no magic in this tourney, but there's plenty of unique powers that can act as equalizers (like magic was).
If it becomes an issue, we'll deal with it accordingly (by considering transferring strength from other characters besides your "body"...since we can't allow pick switches at this point, nor can we invent strength that isn't there). But I honestly don't think it will become one.