The Buffalo Bills losing efforts this season now have some experts re-thinking how the team will do this season. James Walker, a NFL analyst for ESPN, now believes the Miami Dolphins may the second-best team in the AFC West. This comes as the Dolphins are tied with the Bills and New York Jets with 2-3 records. “Miami has been the most consistent of the three teams this season,” Walker said on his ESPN blog. Walker said the Bills, who he selected as his sleeper pick of the 2012 season, don’t have enough heart to win. He said the Bills aren’t able to respond when things go bad. “You have to factor in a lack of mental and physical toughness and inability to respond through adversity,” Walker said.