The biggest thing you should take from the upcoming matchup with the Cowboys is that the NFL is hard to figure out and even harder to figure out in weeks 1-3. What you think is going to happen probably won't happen.
There are going to be a lot of teams that should win on Sunday that lose because week 2 is always wild like that (if you bet, you know about week 2). The Cowboys have as good a chance to be one of them as any other team.