Point taken, and that's indeed the argument. My counter-argument to that is that Ohio State got punked against Michigan, and it was really Ohio State that was the best team in the Big and not Michigan State, but obviously, the games were played, and the results are the results. I'm not saying TCU was bad - clearly a top-10 team (and maybe number 5 or 6) last year but they managed to pull off a lot of squeakers and finally got exposed. I think Alabama probably a better team than TCU, but couldn't get in because they didn't win the SEC West.
Big 12's gonna Big 12, lol.
Line looked good - against TCU. Not sure how well they'd hold up against a top-tier team from the SEC, ACC, or Big. I think some of the teams from the PAC-12 may be finally building some credible line strength this year, too. What did impress me was how well they tackled. The defenders rarely looked out of position. They are also really well-conditioned. I'm almost certain TCU has more depth and that TCU probably practices a lot in hot conditions, but CU's starters kept pace.
Actually I recall it being just the opposite: 3-loss LSU beat UCF, which hadn't lost in like 25 games.
That being said, I don't take non-CFP bowl games seriously anymore because so many players and coaches treat the game as an exhibition and anyone headed for the transfer portal or the NFL draft (or a new coaching gig) doesn't participate. As much as I'd like to believe LSU would have handed a 63-7 beat-down of Purdue during the regular season, I know that's not really indicative of either team's strength.