All you need to know about PFF is that they had Van Noy as the number 1 coverage LB in the league last year. We all know the only two players worse than him in coverage are Elandon Roberts and Tavai.
I am certainly the last one to ever tout or defend PFF, but these type of comments only serve to confuse discussion.
It is entirely possible that KVN graded out as the #1 coverage LB in the NFL. It is also ludicrous to say he is the best cover LB. But those statements are not anywhere close to the same thing.
Here are KVNs coverage stats.
21 attempts 14 compete. 79 yards 1 Td 1 Int
Hard to say a guy who allowed 79 yards all season sucked.
Breaking it down further the total
air yards on those 14 was -2. And the average RAC was just 5.7.
Without seeing each play we can pretty safely assume few if any were down the field since 14 totaled -2 air yards.
So results wise he probably was the best coverage LB.
The difference is all results are not created equal. If he is covering the flat or a small zone with help, or free, it’s unlikely he will be involved in action in coverage.
And that is part of the point. We ran a system that covered his deficiencies and when he was in coverage he wasn’t exposed.
If we put him at mlb, and played cover2, asking him to defend the deep middle 1/3 he would have gotten toasted.
I know you know this, so it’s not really directed at you, but it’s just an example of why you can’t evaluate football and football players from a statsheet.