Instinct says that Dallas is the better team. The Cowboys are also one of the best bets in football: 8-4 ATS this year, one of four teams with at least 8 ATS victories. The Bears are the worst bet in football this year: 2-8-2 ATS.
But those trends eventually break and I believe the Cowboys are a little more vulnerable this week, especially on the road (2-4) than the Bears are at home (4-2).
And one more thing, every team that played on Thanksgiving went 0-5 ATS this weekend with Dallas pending.