Art, I share your optimism and fully realize that may be because since the Cowboys went to their last NFCCG, they are 0-5 in Wild Card rounds and 0-6 in Divisional rounds, 0-11 in their attempt to get back to the NFCCG.
I am going with the intangibles on this one. When this rivalry was at its peak, only 10 of this current roster's players were even born but that doesn't matter. Every player that was in that game last year to end their season knows the feeling of a team telling you they're coming to spank you and take your lunch money and doing just that. However, after all of their self-inflicted wounds, they still had the chance to win that game at the end.
The HC and QB know that bitter taste in their mouths because how the very end was handled only goes away with a redemptive win and delivering that in front of their home fans seems the best way to serve payback.
And this team could not have prepared better for this away game than how they played the last one.