The decisions of a number of key freshmen to return to school should make the race for the 2012 national championship come down to the two winningest programs in NCAA history. Or maybe not. If this season proved anything to us, it’s that projecting who will be in the Final Four, let alone the national title game, is hardly an exact science. The one-game elimination setup of the NCAA tournament provides for plenty of upsets. The chalk favorites have an advantage, but no guarantees.