I don't understand why fans think Dak should play perfectly and have a great rating every game to be our QB of the future or present.
Tony Romo is a franchise QB, but he totally sucks sometimes. That's a fact. He has bad games; he throws stupid interceptions; he fumbles when sacked; he tends to throw high early in games, missing receivers. He's not perfect; he has bad games every year.
That's football; guys get in the zone and play great; guys get out of the zone and play poorly. It happens at every position and moreso at QB.
If Dak has a bad playoff game and we're losing, and he's struggling, I'm pulling him and putting in Tony Romo! But you know what? I'd pull him and play Mark Sanchez if it was bad enough. It's the playoffs; you do whatever you have to do to win because there is no tomorrow. The only guys who shouldn't be considered for pulling in a playoff game are franchise QB's who've proven they can turn it on at any second. However, if Tony was the starter and he was killing us because of the pass rush, I'd pull him and put in a more mobile guy in hopes of having a winning drive.
Either way, I then go back to my starter the next game. All QB's have bad games and even bad months sometimes; that's the nature of the sport.