I'm starting to really question Iupati's ability to consistently pass block. It's been an area of weakness for nearly two years now. He seems average, at best, in this area of his game and that's just not good enough to warrant top 5 OG money imo. I've seen him get beat cleanly on stutter step type of moves by quicker DTs. He needs to step up his pass blocking game to earn that fat paycheck we think is coming.
I'm surprised at that low YPC average when running behind Staley and Iupati. Perhaps a big reason is the run blocking scheme that the 49ers have been using to start the season (running out of the pistol, read-option dive plays).
I wish I could interview one of the PFF scorers to get some questions answered. There are times a defense run blitzes a certain gap and the run play is doomed from the start, regardless of how well that guard blocks (see GB game). How penalized is the individual offensive linemen? Just lots of questions on how in depth their scoring is, whether they look at a player's performance in a vacuum, or do they consider the offensive play being called versus the defense being played.
Another scenario is, if the defense drops 8 into coverage, are the WRs being penalized for not getting open? I mean, it would be a bit harsh to penalize the WR for not getting open versus that coverage scheme.