The condition of the skull wouldn't matter for some of the stuff I pointed. For the eye sockets you could say they broke away, but the Prometheans doesn't look like that. It would either be a deformity on a human or not a human. And the size of the teeth really has no explanation if it is a human other than artistic error. The mandibles could have also broken apart but they just look really chiseled, though that could be a human trait.