Nobody has to lose "a bunch" of games for the jets to make it. Currently, the Steelers and the Bengals are one game up on the jets. Down the stretch they play each other. Meaning one of those teams will take a loss. I don't think we have tie breakers on either of them, so all that has to happen is the Steelers or Bengals lose 1 of the other 2 games they have left.
The jets have to win out, but they have by far the easiest schedule of the three teams.