I think assignments are more recognizable than you think and, again, if their was a question about it they'd simply not grade that 1 play. And, again, each play is reviewed by several analysts and then verified by the NFL Coach Network which has a wealth of football experience and knowledge. Having known and recognizable standards and many reviewing the plays leads to a uniform fair and balanced grading system. While many fans may not like it, I keep pointing out how it is used throughout the NFL and now college, so much so, that they will now become their exclusive clients. That should tell you they are valued by people in football who can obviously understand it all more than fans. What fans say doesn't really matter. They are, for the most part, just meatballs who obviously are not looking at every play through an "all 22" perspective and would still be incredibly biased if they could.