In order to win a championship, you have to be both lucky and good.
Last year, the Eagles were not the luckiest team in the world. They suffered a number of injuries which could have crushed their season, including year-ending blows to their MVP franchise quarterback, their best offensive lineman, their best linebacker and their do-it-all veteran running back. Yet, through talent and depth, they managed to win the Super Bowl.
Last year’s Eagles team also benefited from some good fortune. The NFC East was the weakest it had been in years. The NFC, as a whole, wasn’t terribly good.