I love Joe B's work...save this. However, this attempt to characterize his review of the All-22 as an analytical model fails badly. First, he starts with play counts and letter grades, the latter of which being wildly subjective and in his case, having no basis other than as having covered the Bills as a reporter (i.e., no football experience). Next, he averages them applying weight to each game. You could go one forever, but at least PFF has some objective standards and defensible models. Joe has nothing but a desire to appear analytical.