By Andrew Holleran The Dallas Cowboys blew out the Philadelphia Eagles at home last Sunday night. This Sunday, the Cowboys are getting blown out by the Buffalo Bills. Midway through the fourth quarter, it’s Buffalo 31, Dallas 3. This is the second time this season that the Cowboys have been steamrolled in a big game on the road. Dallas was crushed by San Francisco earlier in the year. The Cowboys will drop to 10-4 on the season with the loss on Sunday. Dallas has already clinched a playoff spot, and Mike McCarthy’s team is having a good year, but this is certainly a bad look. Is this just a ba…