Well I'll go against the grain... Go figure
The picture, assumming the date is correct, is from Feb... So the neck wouldn't be that big (like during the rut), he's skinny because of the rut and now winter.
What I see is a large head, good mass, good width and the biggest factor, for me, is how long his body is!
As of Feb 2009 I would call him a 4.8 year old deer.
I tell you what... Let me come down there to help you "AGE" this buck in October[8D]