Jacksonville's defense has made decent strides (top 10 in Y/allowed), but that team is WAYYY to turnover prone. They are -15 in differential, woof. They also can't generate any turnovers of their own, obviously.
As for Bortles, his line isn't terrible. Guy averages < 60% completion and 6.2 average... pretty crappy #s considering he's got some wideout talent. I really thought Jax would be a .500 team this year... Bradley has gotta be gone for sure. That team has done nothing despite really high draft picks.