Just ask Vegas who the top 4 teams are. They are unbiased and have no dog in this race. Plus Vegas is about the only thing we got that helps keep things fair. For example, if one team is a 14 point favorite and after a couple of days that team is a 3 point favorite then Vegas knows something is wrong. These teams that point shave and have players that are bought get caught by Vegas. Vegas doesn't want to lose and never will.
like I said Vegas will tell us who the top 4 teams are. It's as simple as that.