The scenario is:

The level "The Covenant" from halo 3. the entire playable area is what they both have to work with, they can both choose any 3 guns, on top of their armor, from their realm, and they know the other is looking for them.
They start on opposite sides of the map.

Would vehicles change the outcome?
(Personally I think Slave I would rape the entire covenant fleet by itself, but thats just me)
Who wins?