Sorry, that's a bold-faced lie.
If Romo played for Miami, Atlanta, Baltimore, Jacksonville, Carolina, et al, and put up the exact same numbers he has with the exact same success (or lack thereof, as some say), he'd be called a gutsy player who overcame adversity to become one of the better quarterbacks in football. Guys like Drew Brees, Jake Delhomme, Aaron Rodgers and David Garrard are proof of this.
Because he plays for Dallas, he's a choker.
I'll admit he's having a shit year thus far, but this kiind of bullshit was going on long before that game in Denver.