As maize-and-blue confetti streamed from the NRG Stadium rafters, it felt like the Big Ten’s harvest was finally ripening. The national title game was decided when Michigan outmuscled Alabama a week earlier, but Monday night’s national title was merely the coup de grâce in a process that began five months ago after the Big Ten poached UDub, along with Oregon, USC and UCLA because the Pac-12 failed to procure a media deal to replace their…