Colts didn't look all that great last week against the Browns either. Cowboys are definitely capable of beating them. Hell, winning out and finishing 12-4 is a realistic possibility at this point. Who'd have thunk it a few months ago?
Seattle and Detroit winning Sunday might make winning out necessary, too. It's getting harder to see scenarios where Dallas finishes 11-5 and gets into the playoffs, although anything can happen in the NFL.
Detroit could lose to Chicago and Green Bay, but I'm not sure how likely it is that the Lions will lose both.
Maybe the Seahawks fall to both Arizona and St. Louis, but with the way they are playing and Arizona losing its second QB, it seems more likely that Seattle will win out and take that division.
It also would be a surprise for the Packers to lose to both Tampa Bay and Detroit, although it was certainly a surprise for them to lose to Buffalo.
There is also always the possibility that the Eagles lose to one of their two remaining division rivals, but that seems fairly slim as well.
Dallas controls its fate at this point, but the safety net if it falters in one of its last two games isn't very big.