Theres some subjectivity to it of course.
@slattimer would be able to explain each situation better but the one that first comes to mind is the strip sack in the endzone I'm sure they put on Grant. I believe rightfully so. Benhart takes the d end and Grant should have picked up the blitz.
The problem was Benhart hesitated on which guy he was going to take and Grant got confused. When Benhart took a step inside Grant took a step out. Benhart then went back out and Grant lazily (imo) tried to get back inside completely whiffing.
However, if Benhart makes a more confident move to the outside I don't think Grant gets out of position as much.
Watching Grant after that play he seems very lazy in pass pro.