You'd be surprised at how little genetics has to do with antler development. Probably.
Really? So why do those whitetail farms sell their biggest bucks to other deer growers for huge amounts of money?? If any deer can grow the same huge antlers they would use spindly antlered bucks to breed with their does and not cough up the money to try to produce bigger bucks than anyone else. I will agree that a 5 year old buck in general will have better antlers than a 2 year old, but a 5 year old with poorer genetics traits will never match the one with the good traits. So genetics has a whole LOT to do with antler development.