Bennett getting hurt was a huge injury - what has Romo won - what has Prescott won at any level - Romo has been pro bowl quarterback for years - the mistakes were when Dallas had nobody around him and no offensive line so Romo had to do everything. What has Prescott won - the guy was was garbage against good defenses in the SEC - why he was a 4th round pick. Romo has won at Seattle and played great on the road against a far better version of Green Bay lead Cowboys to a 12-4 record - Prescott is beating bad teams throwing 10 yard passes - that won't work in the playoffs against good teams.
If Romo is the starter I guarantee against elite defenses - Denver, Minnesota, Seattle - Dallas is a smaller underdog on the point spread then with Prescott.