Last year Collins protected the ball and got in field goal range and the defense protected the lead . This year the defense stinks and teams pushed the bully back and now the swagger is gone .
I actually saw some numbers on Collins recently which compared this year and last year and his numbers were virtually all the same, marginally better and worse in some areas but on a whole the same. Collin's job was to manage the game i.e dont lose it.
It's the Titans D that is responsible for their drop off clearly, as the O never had to get much done anyway in order to win.