In general, Inter Milan will remain the favorite in all the upcoming matches in Serie A. However, currently there is no team that is more consistent in Serie A than Inter Milan. And yes, especially after Inter Milan managed to beat Bayern Munich, this team will definitely have higher self-confidence. It's just that sometimes in Serie A Inter Milan still makes mistakes quite often. For example, in the match against Parma where Inter Milan could only get 1 point because the match ended in a draw. And we know that Inter Milan's focus will also be divided between the Domestic League and the UCL. And apart from Serie A, we know that Inter Milan also still has a semi-final match in the Italian Cup. So Inter Milan can be said to be a team that still has a busy schedule.
With the way Inter is playing, they are even beating Bayern Munich, feels like they are on a good momentum and should be able to win the league. Napoli isn't a bad team, they are trying their hardest as well, but we are all aware that no matter how hard Napoli tries, it is all up to Inter to decide. If Inter keeps playing the way they are playing right now, then they are going to be the champions, otherwise there is no way of knowing what is going to happen.
Inter may end up not being this great too, based on the fact that there is a chance we could see how Inter could get tired if they also beat Bayern Munich then it means they will be in semi finals and have more games and that could tire them out and league could get in trouble for them.