Superstar mode player grade

A couple of things I've noticed: 

1. Playing as RB, I can rush for over 200 yards and receive for over 100 with 5 total TDs and end up with a B+ or A- grade. This seems to be due to the number of carries not being high. Number of carries should not matter for my player grade with stats like that. 

2. My player grade is penalized for "bad route running" on a blitz pickup as an RB. Specifically on the routes where I'm supposed to be on blitz pickup duty with the option to release if there are no blitzers. I should not be penalized for a bad route when I didn't run a route and perfectly completed the assignment on the play that was called.