MasterCheif would win because hes soo cool and Luke is so old by now, and MasterCheif has ALOT more weapons that Skywalker. but Skywalker would give a good fight but with all of the weapons that the Airforce and military have in the Halo games Luke wouldnt stand a chance. MasterCheif has SAMS, RPG's, SMG, Front towards enemy, Clamors, Grenades, Body armor, Swords, Needlers, Shotguns, Dessert Eagles, sniper Rifles, and all of the other weapons in the Halo games. Luke Skywalker has "the force" a laser gun, a plane, and a Light saber. i think the odds are against Luke.