I can say for a fact that they do not. Please show me where you say that 19 NFL teams use their information so that I can debunk it. It's false. When did PFF partner with the NFL? Whats more, when did PFF's system become public.
Listen, I have spent the last year as a corporate investigator and an information broker Hammons Financial Group. But a lemming knows how algirithims work. At best, teams have sourced PFF to create their own system. I really don't see why you are being so argumentative. You could have ended it by providing your information so that we can sift through the tea leaves. Please show us the NFL's written consent (in the NFL world a written agreement denotes a tier based partnership).

Now to the next point: public and private consumption. Every statistical based firm has public and private based food that is fed. I'm certain that teams have used many types of statistical firms to build. I'm certain that teams have hired a pre built model and created their own system. They would then own that information. Like I said, teams have been doing this for ten years.They know the model at that point. Nobody knows PFF's model. That is fact. That is not my assumption. It's not a public build. It's not even known in company. It's prefaced.

I'll say it again. I'm not demonizing PFF. I'm not dumbing their system down or building it up. With that said, no smart man should ever have blind faith off something that they are not privy to. I'm not saying you have blind faith. You are probably using it the same way I do. As a fun read. Unless my eyes, along with typical scouting metrics align with theirs it's nothing more than just a tool. When they give good or bad grades to something that makes zero sense, I will not give credit to something unless they give us a reason as to why.

This has always been my PFF stance and has little to do with Robinson. Call it my soap box, if you will.
I enjoy the dialogue.