The Cowboys have a better team as far as talent is concerned than Washington. The WFT is a more sound team right now. Washington is playing better football, particularly on defense and they don't make a lot of mistakes on offense. Their offense is pesky and opportunistic. This does not mean they will beat Dallas next week. But the Cowboys will have to elevate their game from what it has been. The defense cannot depend on turnovers and the offense needs to have some kind of running game. The game is in Washington, the Cowboys 3rd consecutive road game so crowd noise will hamper the offensive line again.
I think The Cowboys will win because they are a better team. But a month ago I would have expected the Cowboys to blow out the WFT and win easily.