The Thing has always been known as one of Marvel’s semi power hitters. He’s not as strong as the Hulk or Thor, but he’s still considered to be stronger than Captain America or Spiderman. (with limiters and at half strength) On the other hand, Machamp is a power hitter and he’s also pretty quick. He could easily overpower Thing in a battle of physical strength and he also has a lot of long range abilities to back him up in the heat of battle. The Thing isn’t safe from long range or from up close so he seems to be doomed either way. Machamp wins.