The Spartan is faster than the marine by a tiny measure, and with the armour is probably stronger, but the marine has far more experience and can soak more damage without blinking (Arms being ripped off, etc...) and still has a good deal of inner armour due to the black carapace.
Scenario 1: Both are unarmed and start 15 meters from each other.
Scenario 2: Both start with an unbreakable knife made of normal metal.
Scenario 3: One starts with a Chainsword and the other with a Working Chainsword, depending on who has the upper hand in the previous scenarios (With the loser haveing the working Chainsword and the knowledge of how to wield it)


