True. And that is why the BCS was made. To differentiate between those teams. It was not made to differentiate between teams that have already fucking played each other...
BOOOOOM.
RWS is (intentionally) ignoring the obvious fact that with each additional team added to the playoffs it becomes exponentially more fair.
A 2 team playoff, where on any given year 2-3 teams have legitimate arguments that they belong in the game? Obviously not fair. A 16 team playoff, where roughly 2/3 (am I doing it right?) of teams ranked in the current system get a chance to play for it all, is infinitely more fair.
That ain't happening any time soon, but a +1 game is considerably more fair than what we have now, and so on and so on.