I don't think I have ever seen two teams as evenly matched, stats-wise, as the Redskins and Eagles this season:
Watch Washington Redskins vs. Philadelphia Eagles [11/17/2013] - NFL.com
The thing that does stand out is the points per game we give up -- it is a good bit higher than the Eagles, even though our D is about the same in every other category (and even better in a few). That suggests that our miscues (on special teams and turnovers) are translating to more points for our opponents than is the case for the Eagles (and seemingly every other team in the league).
But no reason we cannot win on Sunday.