I have pointed this out before, sadly it is now considered as part of their bodies. No matter how hard the foreign object is. Hey the human bone is hard enough that IMO there isn't much significant change of punching power. problem is you feel pain yourself when you hit a thing. that I think is the only advantage of having metal plates.and I have pointed out before that even if Margarito cheated it should not give him that big advantage. aside from boost of confidence which is actually a big deal, I think it was a stupid move to put those materials on his wraps if they were thinking they would hurt the opponent more. just stupid. plain stupid. they fukked themselves up.