Comparing scores against common opponents is not a perfect way to predict the outcome of future games, or to calculate chances to make the playoffs. The circumstances of every match-up are different. Was the other team playing at home? Were there critical players missing because of injury? Was weather a factor?
It’s good to keep those qualifications in mind, because when you examine a few of the common opponents the Green Bay Packers and their fellow NFC North opponents have played, the results are disturbing. For example, the Packers lost to the Cleveland Browns. The Lions beat that same Browns team 34-10.