This has not been anywhere near a middle of the pack defense. That is the crux of the issue. "Wildly inconsistent" is about the best thing that could be said about the defense. The offense hasn't been elite, but the defense hasn't given the offense even a modicum of a shot in 3 of the games, couldn't manage one timely stop against Buffalo, and couldn't keep the team within striking distance against Miami (both times the offense got a TD to get back into the game, the D promptly gave up monstrous, clock eating TD drives to kill the momentum). The offense hasn't been elite, but the defense hasn't been middle of the pack either. Injuries can be pointed to both as to the problems (O-line and WR on offense, secondary on defense), but the LB and S play has been the worst in the league, and without Fuller out there today the secondary had about as good a chance at stopping them as a team of high school kickers.