It's 2006, not 1966.
Sorry, but your argument has no merit when 3/4ths of the Big-10 runs finesse, spread offenses or pro-style offenses. If you want to see good ole' I-formation, power football, the SEC is probably the place to go. Heck, the Pac-10 had four of the nations Top-10 running backs last year.
Five of the Top-21 QBs in pass eff, however, are from the Big-10. Eight Big-10 QBs placed in the top-half among all NCAA QBs for pass eff. Meanwhile, six Big-10 teams are in the Bottom-30 for pass defense.
In 2006, Big-10 conf. defenses will likely be down across the board, while some of the best QBs in the country will return for their senior years.
It's a recipe for a lot of TDs. Everyone except Minnesota and Wisconsin runs a spread, read-option, or pro offense. Minnesota and Wisconsin, incidentally, both return really good QBs but lose their stud RBs. They'll likely be throwing it more too.
If you look at the Top-15 rushing teams in the NCAA, you'll see that the Pac-10 (Southern Cal, Cal, Washington St) actually had more top tier running teams than the Big-10 did last year (Minnesota, Penn St).
This isn't anything new. This has been a ten-year trend in the Big-10. The 'Big-10 is a smashmouth, 3-yard-and-a-cloud league' myth ranks right up there with the 'Florida speed' and 'the Pac-10 doesn't play defense' myths. You don't need to look at stats, or team rankings, or anything else on paper, just watch the freakin' games, and you'll see this is evident. These things are cyclical.
Now, if you said that "historically, the Big-10 is the toughest, most physical conference" then I'd agree with that, but that simply isn't the case right now.
Somehow, these 30, 40, and 50-year old college football myths continue to persist, despite mountains of evidence to the contrary. The Top 5 or 6 teams in the BCS leagues are all recruiting the same kids from the same states. Ohio kids aren't bigger than Louisiana kids, and Florida kids aren't faster than Texas kids. The only people who still believe this crap are Beano Cook and Lee Corso, and that probably says alot about why one was a failure as an AD and the other a failure as a coach. The Top-30 to Top-40 teams at the D1A level are separated by nothing more than good coaches, good recruiters, and tradition.
The best teams from the Big-10, Pac-10, Big-12, SEC, ACC, and even the Big East could beat each other on any given Saturday of any given year.