And....
I decided to take the two sources (PFF and Football Outsiders) and see if they are at all consistent with each other. The football outsiders list was not for the complete season and they used different grouping criteria (PFF was blocking or QB, FO was blown block, confusion, or coverage). Clearly the confusion sacks could be on the QB or on the OL. I decided to just sort the FO list by blown blocks and the PFF list by blocking sacks (both highest to lowest) to see how similar the lists were. I split the 32 teams into 3 groups (11 in the top, 10 in the middle, and 11 in the bottom).
For the top 11 list (presumably the worst OLs for pass blocking), 8 out of the 11 were common to both lists. For the bottom 11 list (better OL), 7 out of the 11 were on both lists. Both lists had Miami as the worst and in both cases by a wide margin. For example, on the FO list, Miami's OL was credited with 35 blown blocks with the next four worst at 25, 22, 22, 22. PPF credits Miami's OL with 41 blocking sacks with the next 4 worst at 33, 32, 32, 31.
The two INDEPENDENT lists are very similar to one another and both show that Miami's OL was largely to blame and worse than the rest of the league by a wide margin.
Why are people so dense on this topic. These are not my evaluations.