Finally Someone steps up. I read a study by the wi dnr about the age of harvested bucks. I can't remember the exact data, and the results can fluctuate from state to state and obviously property to property.
The objective data, even in trophy rich counties like buffalo county, had 4.5 year old bucks making up like 2% of the harvest population. The majority of bucks were still 1.5 and 2.5 with a healthy percentage of 3.5. It was a drastic drop to 4.5. It is rare to get a buck 4.5 years old, even in trophy rich areas. Most QDMA type of bucks are 2.5-3.5.
To get a 4.5 buck with 20" antler genetics is like winning the lottery.