I don't see how any Cowboys fan could root for the Eagles to win. At 1-5, the Eagles would nearly be dead and no serious threat to capture the division title. It would be a three team race for the division title, and the Cowboys have already proven they can beat the Commanders, so if they can beat them again, and take care of business against the other division rivals, they could win the division and be guaranteed a playoff berth.
I think a three team race for the division looks a lot better to me than a four team race. At 1-5, the Eagles' margin for error would be very small. They would practically HAVE to run the table to have a chance at winning the division. Frankly, I don't see that happening when I consider who they have remaining on their schedule. The more teams that fall by the wayside in the division, the better.