I will endeavour to be more 'a normal' for you.
3 of the players assigned values weren't even playing in this country last season, let alone this side. We've set up markedly differently this season, and Grealish barely played last year. How attributes in other sides or benched can be projected onto Moyes vision and delivery now seems a little far fetched.
For instance, Tarkowski has looked the far shakier CB so far over our almost stellar start to the season, McNeil has barely had any minutes, Tyrer played for Blackpool last year in what is the third tier of EFL.
I believe there is a lot of smoke and mirrors behind this stat attribution mechanic, and as 'irrespective of games', could suggest the numbers are easily manipulated as a player could play one game and be MotM scoring a hat trick then sit the season out with their rating effectively protected.