I used to create "Overrated and Underrated" versions of fighters back in the 1980's. My reasoning was, I had friends who saw the same fighters from two different angles and we'd argue about - in a polite way.
Keep in mind, this was back in the card days.
So, we had a Rocky Marciano in two versions - a 10 and a 12.
The 10 had a chin rating of 2. The 12 had a chin rating of 1. That was the old KDR 1 rating.
My one friend said, "If Rocky were getting punched by today's larger, stronger fighters, I think a 2 would be more accurate."
In my estimation, a 1 better reflected his chin because his defense would cause him to be no stranger to the canvas - even against some lesser fighters.
Today, with a revamped ratings system, Rocky's defense is a 2 and his chin a 1. To this day, I still find myself creating "pro and con" versions of certain fighters. It keeps even the most "cranky" experts happy.