That deer is most definatly older than 2.5 years old! Whitetail look much different in the fall and look thin in the summer. But you can still notice the sagging belly of a mature deer (even with the summer coat). 3.5+ year old or older.. and more than likely a 4.5+ year old.

If that was a 2.5 (no way) it would be showing AMAZING genetics.