At 4.5 years old, there is going to be a larger disparity between the “good” gened bucks and the “bad” gened bucks. When push comes to shove (literally) for breeding rights, the good gene bucks will do the lion’s share of the gene passing. So you’ve improved your odds of passing good genes.
What's different in this than in areas AR's are NOT implemented? Except....the bad gene bucks didn't get a head start in life by virtue of a free pass. The TRUE cream of the crop will have risen. The wannabe's will be on the wall of shame (sorry, PT....couldn't help myself)

See....you're giving the 50% bad genes bucks a free pass they wouldn't normally get in "nature". It works both ways.
Good genes & bad genes criteria is left SOLELY to the deer and natural selection.
Agreed....except....you're giving the bad genes group a free pass.
AND I also (at least where I live) feel that in all but the rarest of occurrences, even a “bad” gene buck, is going to be a whopper if left to mature.
And THIS is a good example of why AR's are popular.