I guess I don't fully understand the BCS.
Why they don't have the top 10 playing in their bowls to form some sort of tournament instead of mandatory conference winners doesn't make much sense.
Auburn or Wisconsin should be playing Louisville IMHO.
There is a limit of 2 teams per conference. Hence Auburn and Wisconsin, while better than a few of the teams playing BCS bowls, are relegated to other 'major' bowls due to the ascendance of Florida, LSU, Michigan, and OhSt.