The Chicago Bears are the second seed in the playoffs on the NFC side, hosting a home playoff game and division winners in the NFC North over the Green Bay Packers. All that and Chicago stil finds itself as a home underdog entering Sunday's NFC Championship game against Green Bay.
NFL odds currently have the Packers as a 3.5-4 point favorite over the Bears, which seems fair. The Bears have been a little more inconsistent this year and it's hard to tell whether the weather in Chicago will benefit the Bears or Packers.
The Packers know how to keep things close. Their biggest loss this year is by four points. Aaron Rodgers is playing very well coming off one of the better playoff performances in recent memory and the Packers have won four consecutive games, including over the Bears in Week 17. The Packers have a lot going for them right now so I understand why they're favored.
The good thing about the NFL is that the odds don't really matter. Already in the playoffs we've seen a couple of times who were nine point or more underdogs (Seahawks, Jets) come out with the victory.