Odd that not a single one of the last four teams in the AFC that are still in contention for a playoff spot (but have not yet clinched) controls their own destiny; every one of them needs help from other teams.
By comparison in the NFC six teams (New Orleans, San Fran, Green Bay, Chicago, Dallas and Philly) that have not yet clinched a playoff spot control their own destiny, and only one (Arizona) needs help.
Sixteen possible scenarios (excluding ties) between the four AFC teams going for the number six seed:
Miami Wins, Baltimore Wins, San Diego Wins, Pittsburgh Wins = Dolphins
Miami Wins, Baltimore Wins, San Diego Wins, Pittsburgh Loss = Dolphins
Miami Wins, Baltimore Wins, San Diego Loss, Pittsburgh Wins = Ravens
Miami Wins, Baltimore Wins, San Diego Loss, Pittsburgh Loss = Ravens
Miami Wins, Baltimore Loss, San Diego Wins, Pittsburgh Wins = Dolphins
Miami Wins, Baltimore Loss, San Diego Wins, Pittsburgh Loss = Dolphins
Miami Wins, Baltimore Loss, San Diego Loss, Pittsburgh Wins = Dolphins
Miami Wins, Baltimore Loss, San Diego Loss, Pittsburgh Loss = Dolphins
Miami Loss, Baltimore Wins, San Diego Wins, Pittsburgh Wins = Ravens
Miami Loss, Baltimore Wins, San Diego Wins, Pittsburgh Loss = Ravens
Miami Loss, Baltimore Wins, San Diego Loss, Pittsburgh Wins = Ravens
Miami Loss, Baltimore Wins, San Diego Loss, Pittsburgh Loss = Ravens
Miami Loss, Baltimore Loss, San Diego Wins, Pittsburgh Wins = Chargers
Miami Loss, Baltimore Loss, San Diego Wins, Pittsburgh Loss = Chargers
Miami Loss, Baltimore Loss, San Diego Loss, Pittsburgh Wins = Pittsburgh
Miami Loss, Baltimore Loss, San Diego Loss, Pittsburgh Loss = Ravens