Wisconsin was 10-2 and ranked #13 going into that game. That'd be like if we had beaten Texas (or heck, K-State) in our CCG 40-0 and saying we beat an average team because Texas had lost to Texas Tech. Ridiculous to say a win like that over a Top 15 team isn't worthy of moving the needle at all. And 3-6 were basically the same going into that last weekend, which the committee chair made very clear. There was a razor thin margin between those teams. You can't say T3rd for all of them so you gotta rank em 3,4,5,6. Granted, I think the committee probably got too cute by putting us at #3 when we were really just sitting ducks, my guess is they'd have made that decision differently.
You know damn well that if we lost to, say, SMU, this year and had finished undefeated in the Big 12, 12-1 and beat K-State 45-0 in our CCG game, there is no scenario in which we get left out for an 11-1 team and all frog fans say, yep, the committee made the right decision. Just no freaking way.
And the Big 12 wasn't required to play the CCG game, it just turned out not playing it cost Baylor or TCU. In some years it definitely helps, but it could actually hurt to play that game too, like USC found out this year. Getting screwed and not getting the outcome you want are two different things.