Calipari's two platoons

Even at Kentucky there has to be some significant differentiation in the ability of your #1 player and your #10 player. With the two hundred media timeouts per game that we have these days, why would you want to have your tenth player in the game that much of the time, since your best player should be well rested? Most normal college rotations would not even go that deep. And "first man off the bench" sounds way better than "second platoon."