Well our best DT was 38 when the season started, our best LB then begun his string of injuries that never went away, and there is no doubt we had one of the oldest defenses in the league.
We have a great DC and I think Sparano largely lets Nolan do what he wishes on defense.
Our defense played tough even after suffering many bad losses last year. They really rally around each other and will fight to keep us in games.
Even if Henne plays as bad as last year, I still cannot see us losing more than 7 games.
If he plays worse than last year, I can easily see Moore coming in and being decent.
I can't really envision a scenario where this team is as bad as the one we had in 2007 and us losing close to 15 games.