Overall the D is an issue? They're 100% on critical fourth and short stops, they've gotten big sacks and turnovers when they've needed them. Other than a game winning drive by first ballot HOF'er Tom Brady that featured some RIDICULOUS catches from whats-his-face, they've come up big and gotten critical stops all along the way, often in spite of the offense's ability to stay on the field or give htem good field position.
I'm sorry, but last year, the defense was the issue. This year, it's the offense.