I sports bet quite a bit but I'd never be capable of judging a spread in a Patriots vs Jets game because I would always favour the Patriots too much.
Jets were only beaten by 1 point by the Ravens. You can say what you like about how awesome the Patriots offense was last Sunday but we don't really know how good the Bengals are. I'm still not ready to say the D is good even though they looked outstanding until the game was pretty much over but that was too early to be sure about them.
You also have to consider the Bengals D and particularly their front 7 and how hard it is to beat them with the running game.
So in all seriousness this game could be a lot different than people expect. And on top of all that its the Jets on the road so it matters a whole lot to everybody.