The Falcons were 3-6, and so losing this game by itself would have more disappointing than crushing, so long as they managed to stay competitive. It goes without saying that they did not do so, instead losing an a fashion so embarrassing that Atlanta probably needs to revisit any and all talk of keeping their current coaching staff around.
The Falcons came into this game facing a nervous reserve quarterback with something like 20 NFL passes, and with New Orleans having to play this game minus their top cornerback. A loss would be disappointing but understandable, given that division games mean anything can happen, but they could simply not be outclassed by a depleted Saints team.