I don't judge corners by picks and I don't judge De's by sacks for the same reason. Very rarely do either of those plays occur do to an incredibly athletic play. Usually the guy making the play gets a huge amount of help from the other defensive players. Most picks happen because the QB is under duress and most sacks happen because pressure was coming from more than one direction. I judge a guy by how well he does his job and the h=job of a DE is bigger than just getting sacks, impactful as they may be.