I work with a few die hard Jest and Pats fans, and we were analyzing the dismantling of New England by the Jest. Tom Brady looked like Todd Collins under center (to my utter joy) and Manning was held in check the week before. I recounted to these division rival fans how the glory Bills had a prolific offense for several years, but typically a mid-range to lower-third ranked defense (remember Walt Corey?). In each of the four Super Bowls, a stronger opponent defense shackled our offense, but our defense struggled to do the same. (By the way, I will not argue this way regarding our first loss to the Cowboys --- no team would overcome nine turnovers in a championship game).
Against the Giants, OJ Anderson pounded us unmercifully just before and just after halftime. We had something like a 39 to 21 minute deficit in time of possession. Against the 'Skins, Washington's offensive line took over from the middle of the second quarter to the end of the game. The last Super Bowl against Dallas was closer than people remember, but our defense began to wilt in the fourth quarter.
Time and again, the teams playing the best defense get to the championship game, and they usually win it. The offense needs big plays (about 3-5 per game), but it's the defense that determines who takes home the Lombardi trophy. The Jest are proving this. The Giants beat the undefeated Patriots in the Super Bowl after New England turned the NFL record book upside down during the season. During the playoffs, high-scoring, high-yardage offenses get humbled by great defenses. Then the defense from the high scoring team doesn't perform well enough because they're accustomed to playing with a 14 to 17 point lead.
My point: we need to draft DEFENSE. Yes, you need a very good quarterback to make a run in the playoffs. But it comes down to the better defense almost ALWAYS in the playoffs.