Napoli would have deserved to win,
If we consider a penalty denied by the referee for a foul on Manolo Gabbiadini. In fact, you can win even playing not much well, if you kick and score a penalty. The denied penalty, is been ratified by the former referee Graziano Cesari, and his moviola, in the post-match in Premium Sport.
Here are the Cesari’s words: “There was a foul on Gabbiadini, clearly pushed in the penalty box, when the ball was already past. In Europe usually you are stricter, but, why do not referees report certain episodes?”.
This is the reason why it is not a sin saying that