This, I agree with. This touches on what has always made PFF valuable-- data.
I think their metrics are great and I value the information they can provide. But I don't think they differentiate themselves at all in terms of being able to project college players to the pros. In fact, I think thus far they've been among the worst when compared to other major media outlets that cover the event. Exceptions exist, but most of the time they go out on a limb and break consensus on a player, they end up looking pretty bad in retrospect.
This is what's funny about Dillon-- by PFF metrics, he's really good. He has a really high grade and some really impressive data points. But their draft people, Mike Renner and others, decided that he didn't belong in their overall 250, which is really funny.
They've realized that their grades don't just translate to the pros. So that means they have to watch the players and make individual determinations based on opinion (like everyone else). And they're not particularly good at it.