Forgive Dallas Cowboys coach Mike McCarthy for not wanting to talk playoff scenarios and what the his team needs to win the NFC East and improve their seeding. The Cowboys clinched their third straight trip to playoffs under McCarthy last weekend but it came despite an embarrassing 31-10 loss to the Buffalo Bills. Other scenarios made it possible and then a loss by the Philadelphia Eagles put the Cowboys (10-4) back in a first place tie atop the NFC East with three games to go. McCarthy, however, is focused on getting the Cowboys to 11 wins by defeating the Miami Dolphins (10-4) Sunday and bac…