Give me a pass through anyday. In addition to what has already been mentioned, when an arrow remains in an animal it seems to keep threir adrenalin pumping longer and they go farther in my opinion. That can be bad news if the blood trail is sparse or they have enough life left in them to get to where your not allowed to go.

Now that I have said all that, it is far more important where that arrow hits then if it passes through or not. But I guess that goes without saying.