Alright, so here's a competition. The official, cannon, Spartan hero of all life in the universe. Against the super badass, non-cannon, walking armory of a super soldier.
We've got John-117, the Master Chief. Fighting against him is Allison (a.k.a. Tex), the Freelancer. Each one of them highly skilled in all manner of weaponry and masters of hand-to-hand combat.
So I leave it to you all. Who would win in a fight between these two? And I want explanations for your choices. No one-word answers please. :)