I think there are more than 3-4 teams that could win a championship this year, but, yes, typically 3-4 teams dominate the top of the rankings. It may be because only the dominant teams have been included for in the CFP for so long. The top coaches and top recruits follow the top rankings. The rich get richer. How many gray shirts does Bama have waiting for someone to blow out a knee or shoulder? Give more teams a chance to make the playoffs and great coaches in "other programs" like Wittingham and Fickell will get more top recruits (and transfers probably). We may quickly see 6-8 and then 10-15 CFP-ready teams. Plus, the first round will be played at campus sites so the fight for seeding can be critical. Think South Bend, the "shoe", or Badger stadium in December.