[jdietrich]

Accurately assessing the quantity and quality of punches landed is entirely tractable. If you can accurately track the movement of each fighter's joints (plausible with camera-based CV, almost trivial with LIDAR) then you're just solving a fairly straightforward dynamics problem. A well-timed hook or uppercut to the chin is more damaging for predictable biomechanical reasons - rotational trauma causes more damage than translational trauma because it results in greater shear forces within the brain, particularly the brain stem. It isn't a massively more difficult problem than the doppler radar systems used to track ball movement in sports like golf and baseball.

I think the harder problem is assessing the subjective factors mentioned by shadowerm, but that's also a hard problem for human judges.