Do these guys hate Sheldon Richardson or what? Last year, they had him leading the Rookie of the Year Rankings the entire year, yet somehow managed to choose someone else for Rookie of the Year, and now, they just came out with their Week 14 all star team, and somehow he's not on it. :x https://www.profootballfocus.com/blog/2014/12/08/all-star-team-of-the-week-week-14/ 3 sacks, a safety, 4 QB hits, 7 tackles, how does that not qualify him?
PFF is more advanced then your typical stat. For example, Richardson's last sack, Bridgewater ran right into him. They're not going to give him as much credit for that as his other sacks that game. They still love him overall though. Him and Wilkerson are rated as the #2 and 3 overall 3-4 DE's behind Watt.
Same site that has been sucking the Terminator's donk for three years. Is it news to you that a site gains prominence and then gets bought for personal interests? PFF has always been questionable, now that every publication in the country is interested in publishing their results, why are you surprised that they publish a questionable article?
