I once lost a game 4-1, my GK got a rating of 7, my 2 CD got 8's, my RB got 7 and my LB got 8. The rest of my team got 6 and 7 with my ST getting an 8, figure that out? It's because players ratings mesn nothing, I think they just get random numbers.
Again look through the forum, it's a regular complaint.