John McClane is the man, no questions asked, no if, ands, or buts. While John Matrix is quite the brute, I'm thinking Mr. McClane would edge him out based on the fact that he is a tad smarter, perseverant, and more down to earth than our friend Mr. Matrix imo.
Now, not to take anything away from our favourite Commando (great movie, can watch it over and over without getting tired of it), McClane walked on glass, killed a guy with an icicle, and made a guy shoot himself with a ROCKET LAUNCHER.
I will be there opening day for Die Hard 4: Die Hardest, I can't wait.