Guess I didn't state my point that clearly. I don't think PFF is unfairly weighted, just that the scheme AU was playing was designed in a way that put almost no pressure on the interior so it can make it look like an OG or OC 'won' that battle when the reality is the interior DL did exactly what they were coached to do. They were only a yard or so upfield because that's where they were supposed to be, not because our OL stonewalled them there. I also get that Ridley and Sims earned the grades they got for the game. A single game grade does not mean a player is better or not overall though.
I think a lot of the OL issues stem from the fact that almost all the OL we recruit play OT in HS even though some might be projected as interior guys. Every single one of our starting 5 played OT in HS. Moving inside isn't trivial although we have been spoiled with some guys who were able to do it well. Steps as shorter; things happen much faster; you're playing against different type of players; you have to be more multiple in how you handle combo blocks and aware of more things coming from more places. Some guys can do it and some can't and it's hard to predict who will adapt well and who won't.