Of course Napoli chances are higher but I have a little doubt not without reason, just look at them they should have won the scudetto last week but what did they do? they threw away the opportunity maybe the same thing will happen to them next week and this is the same as what Inter did. The scudetto fight in my opinion is still 50/50 for both teams. I don't remember the last time the Serie a championship fight was like this, one which certainly makes the race more interesting.
Both are almost the same, both Inter Milan and Napoli missed some points, with draws and some losses in their last matches. Luckily, Atalanta has quite a lot of points, so this club is not able to catch up with them.
Oh yeah, Serie A is indeed that interesting. Not only the fight for the Schudetto champion but also the fight for clubs that qualify for the UCL next season.

Only 1 ticket for UCL qualification, and contested by the three clubs. The scenario may change. It remains to be seen which club will take advantage of the last match.
Source: https://onefootball.com/es/noticias/every-possible-juventus-roma-and-lazio-outcome-in-champions-league-race-41139463