Suggested by iKnowledge Sauron got a lot of hype in the Lord of the Rings but never really managed to live up to it. He was defeated by a single stab after all which I’ve never let his fans forget. Master Chief may not use swords much but he has a large array of high tech guns. A single blast from half of those could finish Sauron off. Alternately, Master Chief could just mess him up in hand to hand combat. Sauron is far too slow to stop this either way. Master Chief wins.