They finished the season winning 6 out of the last 8. 3 of those wins were against playoff teams and they beat all of them by more than 1 score.
They beat the Jaguars by 26 points, the Giants by 13 and the Vikings by 11. Not to mention, the Packers would have made the playoffs but the Lions beat them in the season finale. They became a good team in the 2nd half of the season.
You're downplaying the Lions because to try to prove your point about the Bills. Just like you saying the Dolphins took it to us in the playoffs lol...we gave them 17 easy points and Allen was the main person responsible for it.