Actually every game DOESN'T matter the same at all. For instance Bama losing doesn't matter, the committee says that today they would still be in over indefeated teams. Yet for Iowa, Baylor, Oklahoma St., and TCU every game does matter.
Look back over the last 10 years and there has been maybe 1 time that at least 1 or multiple teams with the same records as the playoff teams that are left at home.
It has been a crap system for a long time. Quit protecting nothing bowl games that make zero money and get a real playoff. It is embarrising that FCS teams can do it, baseball does it, basketball does it, but college football is the only major sport that doesn't have a proper playoff.