and the only difference in 2010 was an uber-soft schedule where we played nary a stout defense
This is a bit of a myth and it needs to stop. I can't find the post now, but I compared the total and scoring defenses of our first four conference opponents, where we posted great big offensive numbers, vs the total and scoring defenses of our final four conference opponents, where we struggled. The offensive numbers dropped dramatically, but
so did the defensive numbers. We scored 31 on the #6 scoring defense in the nation (Missouri). Our biggest struggle came against the #6 total defense in the nation (Texas). We weren't suddenly exposed by better defenses later on, we just lost our two best quarterbacks to injury - and tried to play one of them anyway.
2010 was far, far from the 'worst possible' offense.