In response to the reader who said Jimmy Johnson is overrated, when he took over the Cowboys they were 1-15. He made this hopeless team into a back-to-back Super Bowl champions, but not overnight. There are only a handful of head coaches who won back-to-back Super Bowls.
As far as Miami, I give Jimmy one more year, if not this year, to win the AFC. If the Bills had Johnson instead of Levy, those four Super Bowl losses would have been wins. People only remember coaches and teams that win that big game.