Defense is top 10 in yards, points, and take aways. Miami on paper looks like the toughest offense the defense has faced so far, so I'm sure some of the rankings could drop after this week.
The Jets offense even after being shut down on Sunday are still top 10 yardage. No matter what the rankings say the defense kept them in games the first 2 weeks and in the 3rd week when the offense came out of their hell hole the other team simply couldn't take the air out of the ball and more sacks and TOs came.