PBWR in and of itself tells us very little as the vast majority of OL will give up pressure only 5-7% of the time so their PBWR will be 93% or higher.
If you look at Whitehair and Patrick their pass block grades are 56 and 41.6. In true pass sets which removes pass plays where the scheme seeks to help the OL, their grades are just 54.2 and 29.3.
By contrast Jones and Jenkins pass block grades are 81.6 and 72.7 in all pass block plays and 73.6 and 68.1 in true pass block sets.
So you can put more stock in Jones and Jenkins PBWR because it is aligned with their pasd block grades. The same is not true of Whitehair and Patrick which is likely an indication that when they get beat they get beat bad. Whereas a guy like Jenkins may get beat but he usually fights to the bitter end which helps minimize the damage when he does get beat.