I'm new to the game, but I believe that the stars' quality is not a big deal coz it's not real and there's undeclared quality depends on the highlighted skills of the player.
Example :
This player is 118% = 1774 (all skills) / 15. But his real quality = 1371 (only the highlighted skills) / 8 = 171%
As I said I'm new and don't know if this real or not, but it's logical.