It's opinion. Ohio State will have a better overall record than whoever wins the B1G and if you're counting only conference champion then you're completely discounting the OOC component of the schedule. A team can go 0-3 in the OOC schedule and win the B1G championship (same for other conferences), thus, the OOC schedule become nothing more than exhibition games. Don't agree.
Edit: I have no issue with putting all the CC winners in a playoff, however, the playoff needs to leave 2-3 spots open for the best teams that either lost the CC game or did not make the game (i.e. Ohio State)