You have no evidence that will tell you 100% what's going to happen in the future. You have trends you see that make you believe that he can't win a Super Bowl with this team, but that's just your opinion.
Even if you do believe that, do you believe that Romo can win the Super Bowl with this team?? I haven't seen you making that case, so I'll assume you don't. I hate to break it to you, but the goal this season is to win the Super Bowl. It's the same goal every season, but it's more realistic this year than it has been in a while. So if you want to give up on the season after one game, you go right ahead and do that. But I (and most fans) am not ready to give up on the season after one game, and BP isn't either.
There's not "truth" one way or the other yet. It's just your hunch. Not that there's anything wrong with that, but you are being knee-jerk. You ARE giving up on the season after one game, and that's the epitome of knee-jerk.
Before the games on Sunday started, the Cowboys Huddle was on with Babe Laufenberg, and he had BP on there. He asked BP why the first week was important... and BP said that "after the first week, there are 16 teams who wonder if they'll ever win a game." And the fans of those 16 teams think the same thing, that it'll never happen. If those teams just gave up like you're doing, this would be a single elimination tournament and would last 4 games. There would also be a lot of Super Bowl winners who would have never made it. If you can't see that that's what you're doing, then I can't help you. But I hope you don't mind if I don't give up yet.