I completely disagree that the best Defense is a great Offense.
Ask yourself why it's cliche to say Defense wins Championships....
Ask yourself how many Championship teams have been based on outscoring their opponants (By that I mean, 51 - 48 type games, not simple scoring more points, which you obviously have to do to win at all), rather than shutting the opponant down (And I should mention, Just 'cause USC beat the shit out of people last year doesn't mean their of the "We gotta score more points" philosophy)
The best Defense is the D that can stop the run, and limit the pass to something approaching negligable. Take OSU, no one can run on them.. least not yet... and that's been true, by and large, since 1995. While OSU has given up some passing numbers, you have to keep in mind, they face a shitload of passing plays because no one tries to run (Yes, I know that there have been some big running games against OSU in the last 10 years, but they are few and far between) If you run 70 plays a game, and 20 of them are runs, and you hold the completion % to 40% you're still giving up about 20 Rec. a game which might seem like a lot, but isn't, really... I digress...
Point is, teams like the Colts.... they don't win championships, the Patriots do. Teams like the Chiefs don't make the playoffs, Baltimore does....
Teams like TTU don't win the Big XII, OU does (And they've had the best D in the Big XII up til this year, in my estimation)
The best Defense has NOTHING to do with your offense, nor should it. When you play that way, you're Purdue with it's "Basketball on Grass" You're Northwestern... you're Texas Tech.. You're an also ran.
Edit: If you're talking "ball control" offense, then the theory has some validity. I didn't address than as this thread seems geared towards "big play" offense.