No one has ever doubted that, but great players arent judged solely on how they play but by being the catalyst of a winning team which Durant is clearly not. Ovechkin is the prime example of a great player who will be celebrated (anticipating that they close out the series). After a decade of playoff disappointment, if they win it will be validation of his greatness. But think about if Ovechkin would have jumped ship to the Penguins this season and they won third straight Cup. He could have scored 30 playoff goals and nobody would be saying the Pens won because of him.