Actually, the Champions League is more like the FCS playoff than the FBS playoffs. The Champions League includes every European league in the playoff format, in which the lower leagues (like the SWAC or Ivy) getting just the league winner into the competition while the top leagues (SEC, BIG, ACC,....) like the EPL, La Liga or Bundesliga get 4 teams. More schools praticipate in the FCS so that is more like the Champions League. There is no comparison between Champions League and the FBS CPB playoff, which only allows a token non-Power 4 school to participate.