Rodgers' stats were down because he wasn't good this season. His rating was the worst of his career, and his QBR was an anemic 39.4. Having a good running game should have helped those numbers. The lack of sustained drives and poor red-zone performance doomed this season and Rodgers was a big part of those failings. Can he bounce back? Maybe. He's had seasons bad enough for me to start the "Is Arron Rodgers good anymore" thread, and bounced back to playing great.
Why Rodgers will rebound:
1) Injuries - The broken thumb was causing him problems for a large part of the season. Not just in bad passes, but in lack of practice time.
2) Receivers - Doubs and Watson are clearly talented and another year should get them on the same page with Rodgers and just better prepared to play a full NFL season
3) OLine - Jenkins will be healthy and in his more natural position. Bach might finally be healthy for the start of the season, and Tom will have a year under his belt.
Why Rodgers won't rebound:
1) Age - Rodgers turns 40 this year. Age is not going to help his mobility or ability to heal.
2) No chip on his shoulder - His contract makes Love no threat to him, and he plays better when he has something to prove.
3) Cold - Even if the Packers are better next year, Rodgers has looked bad in the cold for several years.
Best guess - He'll rebound enough to be good, but not great. They'll make the playoffs and be bounced in the first round.