Fron the angle the arrow is in it looks like the deer was quartering away hard, I took a great buck this year that came in on the chase and was quartering hard in my shooting lane, as I shot he turned even harder, the arrow struck right in front of the hind quarter and passed through the entire deer hitting liver lungs and heart and exiting the front shoulder, he didn't go 100 yards, so I guess if the penetration angle is right the shot can be very effective, it really depends on the situation and the hunter's abilities to hit the mark