The OP didn't take the shot, he just posted it for discussion. It certainly relates to hunting and I think makes an interesting topic.

I have seen a picture of a hunter with an arrow sticking out of his head. No clue how it happened but he apparently lived. Just...strange....

You can make the same shot on different deer with a rifle and get a whole host of different reactions. I've seen deer just collapse with a clean shot and I've trailed blood a ways to find a very large hole where his vital organs once were. /shrug. I expect its the same with an arrow in some respects and the brain is a whole different thing.