Oh, I will absolutely be rooting for the Bills to beat the Jets. But that is a very long shot to happen.
We might not need the Bills to beat the Jets. The Jets play New England, Miami, Pittsburgh and Chicago in the next 4 games. Based on how the Jets have been playing lately it's not completely out of the question they lose all 4 of those games. Even if they did win one of those games, the Bills have been playing teams tough as well lately, losing that game isn't that unbelievable either. And even if that doesn't happen, if the Jets only beat Chicago and Buffalo, it's possible for Miami to win a tiebreaker with them.
Don't get me wrong, I'm not holding my breath, just stating facts. I know it's an incredibly long shot it happens.
Based on my research, it would still be possible for Miami to beat New York in a tie breaker if the Dolphins win out and the Jets beat Buffalo and Chicago and lose to New England, Miami and Pittsburgh. Tiebreakers 1-4 would all be tied. #5 basically would come down to the 2 games the teams do not have in common which they both won, plus the teams they beat that in turn beat the other team (clear as mud?). For Miami that's Tennessee, Oakland and Green Bay and for the Jets that's Houston, Denver and Chicago. Currently Tennessee, Oakland and Green Bay have a combined 17 wins whereas Houston, Denver and Chicago have a combined 16 wins, so as long as Tennessee, Oakland and Green Bay finish with a combined record better than Houston, Denver and Chicago, Miami would win the tie breaker. Piece of cake.

1.Head-to-head (best won-lost-tied percentage in games between the clubs).
2.Best won-lost-tied percentage in games played within the division.
3.Best won-lost-tied percentage in common games (games played against the same opponents).
4.Best won-lost-tied percentage in games played within the conference.
5.Strength of victory (the combined won-lost-tied percentage of all the teams that a club has defeated).
6.Strength of schedule (the combined won-lost-tied percentage of all the teams that a club has played against).
7.Best combined ranking among conference teams in points scored and points allowed.
8.Best combined ranking among all teams in points scored and points allowed.
9.Best net points in common games.
10.Best net points in all games.
11.Best net touchdowns in all games.
12.Coin Toss.
1 final edit: I found the following article which details all of the Dolphins playoff possibilities.
http://www.sun-sentinel.com/sports/miami-dolphins/sfl-dolphins-jets-tiebreaker-112910,0,6215711.story