At worst, Rob Johnson battled Doug Flutie to a draw in Sunday’s quarterback derby at Qualcomm Stadium. Unfortunately for Johnson and the rest of the Buffalo Bills, most of the rest of the key plays in San Diego’s 27-24 win were made by men wearing Chargers uniforms. “This is right up there with the Tennessee game — it hurts that much,” Johnson said. “This game was huge for us. We were playing a lot of our old teammates, with Mr. Butler there and his scouting department — it’s Bills West.”