Sure on paper this game shapes up to be high-scoring. The Titans lead the NFL averaging 31.1 points per game. The Packers are right next to them averaging 31 points. 
But there is more than just statistics at work here starting with the weather. There is a 90 percent chance of snow. Temperatures for this night game are going to be in the high teens and the wind will be blowing at 10-to-20 mph. 
Those are far from plus conditions for quarterbacks especially for warm-weather QB Ryan Tannehill. 
The Titans figure to stay on the ground a lot as Green Bay's run defense is worse than its pass defense. That's going to eat a lot of clock. The Packers' defense has been much better at home. Green Bay has held its seven home opponents to an average of 20.2 points a game. 
Green Bay could manage just three points on a 51-yard field goal by Mason Crosby in the second half of its game against Carolina last week. The Packers figure to run the ball more than normal, too, considering the conditions. Plodding rookie running back AJ Dillon could see his first extended action with Jamaal Williams doubtful due to a quad injury. That would be an added bonus for the Under.