Take away Revis and the Jets are a 3-13 team.
They have one other player on defense that is clearly above average for his position, David Harris.
The DL is among the worst in the NFL. The rest of the LBs are awful.
Cromartie may be the other guy who could be in the slightly above average group, but thats a stretch. The safeties are poor.
Revis makes every one of them better, and dictates what offenses can do, so he covers some of that, but this was the 20th ranked scoring defense in the NFL WITH Revis. Take him away, and they couldn't stop anyone.