Falcons are 72%, lol.
Some accuracy to their model given a huge piece of this puzzle is the strength of your division and schedule:
We are not favored to win our division, and then with a tough division and schedule, we are not favored to beat other NFC teams (with easier schedules and divisions) to grab one of the world cards.
So we'll just have to beat the odds and win more games than these geniuses anticipate.