I understand his bitterness. The Saints were able to accomplish something last night which his Bears couldn't do three years ago. Since then his team has played mediocre ball at best and have yet to return to the playoffs.
Ask Brady, Eli, Warner, Farve, Sanchez, Stafford, Ryan and Peyton why he's bitter. Romo is the only one of the elite QBs that probably had a good night's rest after facing the Saints opportunistic defense this year.