PFF grading system appears unclear

Does PFF take into account a NT facing 2 blockers and a 3tech DT facing 1 blocker in their grades?
https://www.pff.com/news/pro-how-we...f PFF's grades,run than highlight-reel plays.
Here's a great article on how their grading system works. General rule of thumb if either of us know about it, I would imagine professionals that make a living do as well.