PER is the value of player efficiency index as the comprehensive data index?

WS refers to a player's contribution to the team's victory. Calculation formula of contribution value: victory contribution value = offensive victory contribution value+defensive victory contribution value.

PER value can record the performance of all players, and then can be weighted and integrated to evaluate and compare players in different positions and generations. Its calculation formula is: (score+rebound+assist+steal+block)-(shot-hit)-(free throw-free throw hit)-error/player's playing times.