Shitty way to lose for the Cowboys, but if I were a Dallas fan things would be looking up for the rest of the year.
They should be favorites for their next three games, with the most difficult being Detroit at home. After the bye week, they're @ New England, vs St Louis, and @ Philly, a pretty tough 3 game stretch. But after that, they have another 5 game stretch where they should be favorites in every game. Even if they won only the games they're "supposed" to win for the rest of the season, they'll be knocking on 10 wins and a trip to the playoffs.
I get the feeling the Falcons' game was more of a fluke than a sign of things to come as well. They looked equally bad against the Steelers in the opener last year, when Roethlisberger wasn't playing and they still found a way to lose. However, having to host Philly the next week isn't a good sign at all, and falling to 0-2 and having a "must win" at Tampa the week after isn't a promising sign either!