I don’t know why you think that this is a mathematical exercise, is Dyabala a bad player because he doesn’t get to play his position in Argentina and thereby doesn’t score any goals? Same With Icardi and on and on. Teams are throwing up 100 million + for their signatures. You are comparing starting players in Barcelona, Real Madrid, Man City, Man United, PSG and on to bench players in the Portuguese league, Russian league and Turkish league, due to them not being selected.
As a Madrid fan for over 20 years, Pepe is obviously a legend although his time expired in 2016. Coentrao is one of the worst signings Madrid did in modern times, had a spark when he signed and been injured and on loan+injured ever since. So that’s his whole career basically.