John(master chief) u should read the Halo books, he gets augmented like 5 times and his armor pwns, while mario cleans toilets for a living and live in a land of mushrooms and turtles, and master chief also has futuristic weaponry which is pretty nice!
Lawl, I knowm that I'm commenting on my own Topic again, but anyway: Yea Master CHief has got all his guns, and missions, armour and stuff.. But MARIO can be like shooting fire, walking over water, jump high, run fast, jump on the Master Chief(LoL), and that kinda stuff =D
for those of you who think master cheif, just remember that anything the cheif shoots/ throws at mario, it would be deflected by his cape and completely pwn cheif with his own weapon! Plus mario can destroy pretty much anything, including a giant luigibot that can shoot lasers of death and fly (Super paper mario)
Mario is not a super hero so if he is not either big he you die a soon as master chief shot him but if master chief could die by getting stomped on his head would say Mario but a 2d Mario has no chance