My guess...
1st Quarter: Dallas offense starts off slow. They look pretty bad. Maybe it's from a lack of preseason play from the starters? Meanwhile, Dallas D does a nice job keeping NY from scoring TDs allowing just two field goals. 6-0 Giants. Cowboys Fan Zone starts freaking out.
2nd Quarter: Dallas picks it up and starts moving the ball up and down the field. However, crucial mistakes keep them from scoring more than they should. They only come out of it with one TD: a redzone pass to Dez. 7-6 Cowboys.
Halftime: Mediots say stupid things in between long commercial breaks.
3rd Quarter: NY scores on a punt return, and Eli throws a TD from great field position after another Dallas special teams screw up. Meanwhile, Dallas starts capitalizing on its opportunities, scoring twice: a long pass to TWill and a 6 yard run by McFadden. 21-20 Dallas.
4th Quarter: We finally start seeing why this Oline is so dominant in the running game. We begin running the clock out, and our pass rush gets to Eli twice. 28-20 Dallas locks it up late with a 31 yard Randle run.