I just said the exact same thing! If he truly took a bullet to the ear, particularly from an assault rifle, that soft cartilage would be in his words “obliterated”!!
If he was shot, he shouldn't have an ear left. At most a bullet passed by but was nowhere near him, if it was close he'd have lasting scars from burns. The blood was either take or caused by a big of glass from a broken teleprompter.