Two of the three coincide with the recent demise of USC, but Oregon's been good, not great. That's the difference we're talking about here. The CFB field frankly sucked this last season. You won't often see a team with as poor of a defense as Auburn had going undefeated and winning the BCS.
Oregon can keep winning 10-12 games a year, and if CFB is as thin as it was in '10, maybe even make another BCSMNCG, but here's how it breaks down: Except for Texas in '05, all BCS champions have landed a top 4 class within 3 years prior of their national title, and at least half of them had multiple top 3/4 classes within 3 years of winning it all. And Texas in '05 wasn't *that* great of a team, but VY went all VY in the title game.