It's a problem mainly with the right and left midfielder positions in the game. Usually these players have the more advanced attacking midfielder roles as their naturals so you have to train them for a while in the more withdrawn roles for them to be fully "greened out".same here really, its just a visual thing that my players might have half a star suitability for the role, but they still play well,
what about the right striker that does the man marking? does any get lower ratings from him as i do?
Practically there is little difference and players like Thuavin and Coutinho will start out as 4/10 rated but can get 8/10 average ratings over a season and barely improve rating wise. The ratings are misleading and if you know the actual roles of each position you can make a better judgement yourself than the in game staff.