But we can see more or less how the game chose a max. of 3 high scorers, max. 4 (and here I would like to know who decreases the avq to manipulate comps^^ lol)

So, this is the ratio, and this happens because there's "dominance space" for these players to be key players in this position.

Myself Ive expecienced a situation, and we've seen many times, how a team with key players for example as DL/DR MC and some AM maybe can try to buy +5-6 different STs to have an scorer there, but due these limits the players never change the original rank of contrirbutors, so they -all STs I bought- are hidden by the engine just been there as a potato in front a Gk. And all of them.

In the cases we see here, would be the same if I challenge you to try to buy a MC who can score 30 goals per season, it would need space to be a key player if that happens and probably the team dynamic would change (and maybe hardly lol).