kshunter, this is an easy one.
It's not hard to tell it's a fake and here's why. If you look at the G6 and G7 on the deers right antler you can see where the person tried to put a shadow of the antler behind it. The problem is that the shadow is the exact same size as the points. This would not even be close to realistic seeing as how the rack is a good 6 foot from the back of the cab (which is where the shadow falls). For example, if you have a spotlight 20' from a wall and then place your hand 6' from the wall the shadow is going to be alot bigger and distorted a little, it's funny how this shadow is clear as a bell and no larger than the points themselves. People that don't know much about lighting, shadow everything they draw, paint, or edit in this manner.