The difference in the game was this:
Bears: 1/3 in the redzone (33%)
Packers: 4/5 in the redzone (80%)
The Bears offense missed on some key opportunities that could have turned the game around, but our defense put up no resistance vs the Packer's offense. It was waaaaay too easy. The yardage stats don't tell the whole story. Yuu have to take time of possession into account, and the overall efficiency of GB. They had a lot of explosive plays and didn't need as many plays to score as Chicago did.
For the eternal optimists, this is the gameplan the Cowboys ran with all of last season, and they got pants'd by SF in game 1 before winning 6 in a row. I highly doubt that will be the case here, but if the Bears can continue to run the ball like this, they are going to be in close games all year.