Romo didn't choke. He ran for his life and improvised quite abit. I never really believed him to be a good QB but now I do. The pick at the end was desperation. I can see where he is easy to not like so I see where you guys are coming from.
Except of course, for taking two 4th quarter drive-crushing sacks despite being out of the tackle box where he could throw it away, throwing it away and getting an intentional grounding call, and being unable to hit an open owens in the endzone on 3rd down with 20 seconds left and the ballgame on the line.
His decisionmaking and playmaking ability was poor in crunch time = choke.