(note how I said or the week after) I was talking in general terms. You can't have a week where you shut out an offense and then another week where you can't stop an offense. That's precisely why they are ranked where they are. They have games that are among the best defensive showings that you'll see from any team the entire year and then the next week they'll struggle to tackle.
Every team in the league does this. NE got gouged by us, KC, jets, Denver and Green bay. And they still won 2 of those 5
NFL is all about match ups so you are never going to see real consistency.