It's the Bills that are overrated. Every team in the league has at least a couple great players other teams would covet.
But the Bills are simply also-rans. Get to the playoffs, win a wild card round game and then go home. That's great if your this years Green Bay Packers or Houston Texans doing it. But doing it 3 years in a row just shows what a fringe team the Bills are. Whenever this team improves in one area, such as the running game this year, they fall back in another, such as the receiving corps under-performing.
We've seen Kansas City rise, also seen Cincinnati rise and get to SB, and Baltimore rising this year. The Bills are just stagnant. This team hasn't grown, they haven't really tapped into their playoff experience and they just don't seem to want it as much as other teams.