The mark on the helmet or face of the elder was most likely (havent seen AVP in ages) the clan's symbol. The only eason Scar is called Scar is because he was the only yautja of the 3 to bear the clans mark on that hunt.
Ofcourse the elder would have it, he is supposed to be the most experienced hunter within the clan.
So no, i would not call the elder Scar.