The magic number, it seems, is about 4,100 yards or more and 50 TDs. Assuming no RB goes over 2,300 yards in combined yardage...
Past winners:
Robert Griffin III: 4,992 total yards (4,293 yds passing + 699 yds rushing, 47 TDs)
Cameron Newton: 4,327 total yards (2,854 yds passing + 1,473 yds...