It's hard to imagine either one of them beating Green Bay in the NFC finals at this point. You also can't rule out the Seahawks getting their act together by the end of the season.
The Falcons recently lost to the lowly Saints.
It would be nice to see some new blood reach the Super Bowl.
As of now it looks like New England VS Green Bay.
The Panthers beat the Seahawks. The real test is November 8th when they face Green Bay. If the Panthers lose that game at home I don't think they will win the NFC.
FYI - Sunday night's game between Denver and Green Bay could be interesting although it won't affect their odds of going to the Super bowl since they play in different conferences. However I believe if Denver loses they have no chance of catching New England to win the AFC home field and conference title.
Green Bay has back to back road games against Denver and the Panthers. Now that will be a real test for them.