and look at the average points against for completed bowl games....
Big12: 24
Big10:36
The Big 12 has played ZERO ranked teams, and has had four matchups where they had a ranked team against an unranked team (they're 2-2). OU vs. UCONN? Give me a break. Even though Arizona wasn't ranked, I was still impressed with OSU's big win (I've been impressed with them all year). But Nebraska goes down (still a Big 12 team, folks) to an average (at best) Washington team that they curb-stomped in September. And the Big 12 is 1-2 against the Big Ten this bowl season.
Meanwhile, the Big Ten has played four games against ranked teams (with one more to go). They're 1-3 in those games, but two of those games were where the Big Ten team was unranked (1-1). Two of those games were against ranked SEC teams (Big Ten was also the dog in all of their NYD games, I believe).
The Big 12 has one more game to go, against a ranked SEC team (LSU). Personally, I don't think A&M beats LSU. A loss puts the conference at 3-5. The Big Ten, with a win against Arkansas (hardly a given, but that looks to be a great game), would also finish 3-5. Same record with a tougher slate? The Big 12 doesn't have room to talk in that situation.