Machinima Pits Soldier Against Soldier: Captain America and Master Chief

In preparation for the release of Captain America: The Winter Soldier, Machinima has brought life to another hypothetical fight in their Super Power Beat Down series. They've previously produced White Ranger/Scorpion and Wolverine/Predator.

Who'll win this battle and be the ultimate soldier? The winner was chosen by users, so whichever is cool right now.