Stop being dense. I've literally shown you empirically that the CCG will hurt much more often than it helps.
For 2015: For one, you're flat wrong. 11-1 OU finished ahead of 12-1 Iowa. BUT BUT BUT THE DATA POINTS.
For two, OU being behind Sparty has nothing to do with 13 vs 12 games. Sparty's last 3 games were winning at the Shoe against #3 tOSU, who many thought was the best team that year, beating Penn St by 39, and then beating undefeated #4 Iowa on a neutral field. OU's loss was worse, getting dominated by a very bad Texas team, whereas Sparty lost at Nebraska who went to a bowl game that year, and Sparty led that game 39-26 with 2:00 to go and the winning TD was controversial.
In the final poll Sparty had wins over #5, #7, #14, and #15, with 3 of the 4 wins away from home. OU had wins over #11, 16, 17, and 23. And guess what? Playing and winning the CCG would just knock OU's best win down from #11, so then the 3 best wins between the two teams are all Sparty. I"m sure that would move OU ahead of them though to beat TCU again.
Without a CCG in 2019, who edges OU? There were only 3 one loss conf champs other than OU. Literally a 0% chance they get edged for the 4. Only way they lose it is to lpay the worthless CCG. You are saying something "arguably" happens that has a 0% shot. In 2018, 12-1 tOSU was behind 11-2 UGA because of how shitty tOSU's loss was, but they are somehow gonna be ahead of 11-1 OU. 11-1 OU was ahead of 11-1 tOSU going into the CCG week. I doubt beating trash Northwestern moves the needle, again given that they stayed behind UGA despite UGA losing the CCG.