^This
A few years ago BYU was one of the teams with only one loss but not invited to play in the National Championship game to which they started whining and crying about how they deserved to be there because of their record. They preceded to get blown out by their bowl opponent who had a worse record than they did. This is why you just dont let any team play in the playoffs because of said record because then you will have teams who really dont deserve being there getting their ass kicked and the playoffs would simply become a joke and not used how it was intended.