I would agree with you if it wasn’t for the fact that his ear looks completely intact. Bloody, yes, but no chunk missing. If it was an actual bullet moving at subsonic speed even a graze would leave more than a little blood. Another thing to consider is that there would be WAY more blood than what was shown. Your extremities bleed more than any other part of your body because that’s where all of the blood vessels gather. I know this from the personal experience of splitting my head open on a metal pipe. It took no time for blood to cover one half of my face. If he was actually shot in the ear blood would be gushing. As it stands it looks like someone smeared lipstick on his ear.