After see Buffs pic I thin that need to be a little bit adjusted lol max. 1 player, or 2 in rare cases should have the 10 for outstanding contribution during the match. That should have to depend of how active is the player during the match, how many times appear or in some sense their input help in defense/middle/attack/gk...

I still thinking that the own internal proggramming of the player is what determines the ratings, so my experience with ratings is that are a little bit linear.
But today we talk about 10's. My viewpoint is that 10's have to be more exclusive.