The consensus seems to be that the Cowboys will come out running the ball and the Packer D will lean towards stopping the run with their personnel assignments. Why not? Behind that O line who wouldn't think that's the obvious strategy and counter-strategy of both teams?
So, here's an out-of-the-box strategy: The Cowboys initially come out pass-first. This would probably take everyone by surprise. An already suspect Packer pass defense may be further compromised if it is caught favoring the run. Advantage: Cowboys. And as we all painfully witnessed against Colin Al Frisco a few years back, when a Capers D gets caught less-than fully prepared for something it may be unable to adjust in time, if at all. Perish the thought that the Cowboys would also run the option. This is not a prediction, just a "What if?"
However, I'm far more inclined to believe that the Cowboys will play to their strength. I would guess they want to continue to impose their will just as they had in the earlier meeting this season. They totally demolished the (then) #1 rushing defense. Like a Lombardi team of old, they don't care if the opposition knows what they're going to do because they are confident that their opponent will not be able to stop it, anyway. It's a football macho thing.
Still, if they get the ball first it would be an opportunity to once again demoralize an opponent at the onset but in yet another creative way. It may say "We've already proven we're stronger than you, but this proves that we're also smarter and you have no chance."
And if pass-first didn't work on that first series they could always go back to favoring the run on the next series with little being lost. But if it did work out well it could quickly put to rest any doubts that a playoff game will rattle the rookie Prescott's confidence.