@Legalll That's probably THE twist/point; as far as I could tell he didn't mention any specific conditions about winning or losing the duel beforehand.
It could probably go like this: two 1v1 semi-finals, the losers of the previous semis would then be pitted against each other and the "ultimate...
Wouldn't it be logical to protect the face anyway, since that houses the primary visual sensor; not to mention the all-important bits and functions behind the face (IF they're indeed stored on the head)