The Thing, as he has appeared in recent Marvel stories, vs Colossus in the same way. This is a battle of showings, no handbook BS or anything like that, just feats.
CLASSIC FEATS DO COUNT. But both characters have improved in recent years, so we're going by the beginning of 2000 as their normal.
Colossus BEFORE HE TURNED INTO JUGGERNAUT.
Fight in a Roman colosseum.
NOBODY CARES WHAT THE HANDBOOKS SAY.