Jets are stacked. They improved their passing game but had a setback at the running back position. Their defense is better.
Dolphins have Brandon Marshall now, who will improve their throwing and running game
Patriots are declining but still a very dangerous team
The only divisions that I think provide competition as the best are AFC South(Indy, Houston, Tennessee), AFC North(although Pittsburgh is sketchy, Cleveland is horrendous, and Cincinnati is questionable), and the NFC North if the Bears are good this year