PFF is crap; however, after my review I determined that Claiborne was a bigger problem that it appeared when watching the game in real-time.
Yes, some of it is from the pick plays, but I think they target him more because they know the Cowboys won't try anything complicated with him in terms of mixing up the coverage.
He also had some fails tacking after the catch and against the run.
That's a completely fair take.
Mo had easily his worst day of the young season.
But he was not a bottom 5 CB for the week.
Thus the issue with PFF and their metrics.
Jerry Rice catches a 6 yard pass in tight man overage with no help and runs 30 yards and it counts the same as a play where a scrub beat you like a drum for a 25 yard out where you had help over the top.
They have to include a component for passes not thrown and they needed to mention the offensive pick play Mo won which was a time he had been targeted.
So he was targeted and either counted negatively or they simply ignored the targeting altogether. Either way an issue in their scoring.
Mo is not now and may never be a good tackler. Knocks there are well earned.
But his PFF grade should be accounting for playing ODB, Julio Jones, Edelman et al.
Patmon who lost his job shouldn't score higher based on guarding a 3rd or 4th WR and even air many plays.
Percentage of plays you provide good coverage as well as times you draw WR1 versus WR2 or WR3 should be factored in.