think it was Simmons on his podcast who said, listen to Romo and you can tell he's not preparing for these games. he made his shtick being a predictor, calling plays (correctly at like a 5% clip, or less) and he's running with it.
he's just out there throwing around word salad and yukking it up with the stiffest human on the planet, but not putting in the prep time to be polished and knowledgeable about the players, the rules, etc.
he sometimes lucks in to a play call and people go bananas about his wizardry.. but ignore the next 10 predictions where he's completely wrong, not just about the play call, but the scenario and what is going on in the game.