The AP/Harris Polls and Coaches Poll get votes from their individual committee members. You must be a member of their individual committees to vote.
If you want to disregard the fact that every final college football poll that includes all games ranked TCU higher than Baylor in 2014 that is your prerogative.
If you want to disregard that every final college football poll that includes all games ranked Ohio State higher than Michigan State in 2015 that is also your prerogative.
However, it is very easy for anyone who understands college football to look at the performance of each of those teams and conclude that TCU was better than Baylor in 2014 and Ohio State was better than Michigan State in 2015. I provided some information that backs those facts up earlier in this thread.
TCU had a much better defense than Baylor in 2014 and it wasn't even close and Ohio State had a much better defense than Michigan State in 2015 and that wasn't even close.
At least we both agree that an 8-team playoff system is needed ASAP.
Regarding which team to take out instead of TCU in 2014, I wouldn't have eliminated any of those teams. In fact, I would have also included Baylor as 1 of 8 teams in an 8-team playoff in 2014.
No, the AP and Coaches' polls were not committees. They did not meet together and discuss the rankings, as the CFP does. The coaches or media members cast individual votes, without input from other voting members. Not a committee in any sense of the word.
I will definitely disregard the rankings you mentioned for TCU and Ohio St. There is nothing you can say that proves either TCU or Ohio St were better than Baylor or Michigan St in those respective years. I don't care which team had a better defensive ranking, better passing stats, or any other bullshit. The bottom line is, those teams had identical records, and Baylor and Michigan St won head to head. End of story.
Let's take your logic even further. Michigan St and Ohio St are in the same division. So last year, Michigan ST and Ohio ST both finished with 11-1 overall records, and were 7-1 in conference. Well, by your logic, Ohio St should have made the Big Ten CCG last year, instead of Michigan St, even though both teams had identical records, and Michigan ST won head to head. Well, if that's your position, then it's ****ing stupid. If you say that isn't your position, then it makes no logical sense why Michigan St should win the division over Ohio St, but not make the playoffs. That's asinine.
To your final point about 2014, you can't judge 2014 against an 8-team format. The format was what it was, so you have to deal with the reality of that situation. In that situation, if TCU gets in, then somebody has to be left out. There simply isn't any justification for TCU jumping any of the 4 teams that did get in.
By the way, if you say head to head doesn't matter, then I say Ohio St should get into the playoffs (and the Big Ten CCG) ahead of Penn St.