Flaw: In a playoff, a team that wins every game is the champion.
In any playoff I have seen, a team that wins every game is the
*champion*. They win the title. If the regular season is a playoff, how
do you explain Auburn 2003 who went undefeated and had no shot at the
title? How do you explain Utah and Boise State in 2008. Hell, Boise
State went undefeated, was ranked ninth and did not even get a BCS bowl
bid much less a chance at the title.
In addition, in almost all playoffs, a loss eliminates you
completely. How do you explain LSU in 2007 going to the championship
game with two losses?
The regular season is not even close to being like a playoff in that
seeding for who gets to play in the championship game is done by
subjective, warm fuzzy polls instead of play on the field. With 119
teams or even the top 10 teams, it is simply not possible for people to
"guess" as to the two best teams.