To me, their defensive performance was OFFENSIVE.
Had they had a decent defense, we could have at least looked respectable in the NFC title game. As it was, we were destroyed on that side of the ball.
Look at many of our other games during the season, where our offense shined, got a lead, and then barely hung on because of the defense messing up. The Dallas playoff game is a perfect example of that. We almost lost because of the defense not being able to stop Dallas.
Without a super offense, we would have lost that game.
We NEED a defense that can keep us in games when the offense isn't "super".