I think Napoli is a better side than AC Milian,they won the trophy last season but luckily because Inter Milian were more closer but just that luck wasn't on their sides.Sometimes Odds doesn't matter nor determined the best outcome in a game. I remember vividly years ago when FC Locomotiv Moscow was playing against a small team,and in that game,L.moscow was given 3.29 odds because they were playing away to win against a smaller team at Home.i simply didn't allow the odds to bother me because I knew FC Locomotiv Moscow is stronger,more inform and will win the game. However the odds difference was because Napoli will be playing away against a strong AC.Milian.
As for Inter Milan last season, I seriously think it was really about them not having luck but they did not set their priority right. At one point we saw that Inter Milan was among one of the three teams in Europe that were eyeing the treble, them Barcelona and PSG. At that time they were in the summit of the Serie A table, at a point they lost to AC Milan in the Coppa Italia SF, they were still top of the league. They started messing up all because they were paired with Barcelona in the Champions league and because of that they didn't win about 4 straight matches in the league and that was were and when Napoli took the advantage and displaced them to move 1st on the table. Inter Milan didn't set their priority right and I think that was why they lost the league to Napoli.