The Dallas Cowboys defense was the definition of feast or famine in their 40-34 win against the Philadelphia Eagles on Saturday at AT&T Stadium. Every time the Eagles had the ball, they either scored or turned the ball over. Despite surrendering 27 points to a backup quarterback, the Cowboys defense deserves credit for forcing some game-changing plays. Two takeaways came in the fourth quarter when it appeared Dallas was on the brink of falling behind again. Tied 34-34, DaRon Bland ripped a pass right out of the hands of Quez Watkins on third down after Philadelphia had gotten close to field go…