The biggest advantage the Packers have over the rest of the NFC North is #12. Young team with lots of growth potential on both sides of the ball.
While the Vikings have improved, I think Bridgewater is still a work in process and only if and when his level of play improves and becomes consistent, could they be a force. But Adrian Peterson isn't getting any younger and once his wheels are gone, they better have an equal replacement or everything is going to be on Teddy.
The Bears have Jay Cutler, enough said. I think John Fox is turning that team around, but if I was a Bears fan, I couldn't wait to get out from underneath Cutler and the organizational blunder the Bears made with his contract. Thier defense could be drastically improved.
Lions, they are the Lions. Matthew Stafford is a lot like Cutler IMO. Shows brilliance, but at the end of the day his attitude, mistakes and inconsistencies aren't what make a championship team. Not to mention that it seems like no matter who is managing the Lions, they just can't figure out how to put together a winning team.