I've never looked at it with more than curiosity. I see it was a guy's opinion on how the game was played. They don't know what a player's responsibility was. A WR may have gotten open but if he actually ran the wrong route and the completion was only incidental, then Sean Payton won't play the player often until that kinda mistake isn't made.
Agreed. It’s like a barometer for the “eyes have it”. Basically looking at it from a fan’s perspective of the game. I’m sure there are some calculations in their work, but not gospel by any means.