All depend of hidden programming. What one wasted for a player is not the important.
So, just prove, and look how he contributes to help your team.
In my case 90% of scouts do something good or are excellent. 10% is the case of Djibril Cissé, ST that scored for me "3" goals in 26 matches.

Prove.
See.
Decide.
Don't see the ratings/valorations, because are just a referance. Of what? ...I have to reflect about that... coz is dificult to explain.