As a fantasy football QB, Romo is most certainly in the top 5. Since taking over as a full time starter his yardage and TD numbers are as good as anyone not named Brady or Manning. His sample size of starts is at about 25, which I think, validates his status as an excellent fantasy QB.
As a "real nfl" QB, the jury is still somewhat out. He has yet to win a playoff game. If the Cowboys flame out against the Giants after winning 13 games, then he has some serious questions to answer, especially because the Cowboy offense has been downright mediocre over the past month. Yes, TO's injury is an issue, but at the end of the day, it's the QB that gets too much credit or too much blame for a team's overall success. Compunded with all the Jessica Simpson vacation nonsense, a Cowboy loss in round 1 will have the buzzards circling.