"Now here's the blindspot with PFF. They don't differentiate between problem OLs and just regular OL play. Problem OLs do more than just put the qb under pressure. It never just reduces to pressures. Yet they have no way of accounting for that and seem not even to be aware it's an issue. They are good at doing numbers in the abstract but their numbers do not account for contexts."
I disagree Zn, the guys at PFF are very thorough in their analysis. You're inventing a blindspot and projecting it upon them. In fact, their analysis shows that they were accounting for contexts in that they were able to identify that there is a relationship between both the OLine and QB play.
