You are right, Inter Milan always has a big name and with a good history too, if compared to Napoli then we will find a lot of differences. Maybe some people will say that it is just history and what happens now could be different. That is not wrong, but one thing we can see is their journey too. When a team with a long journey they are always in tight competition and also win several titles, then mentally they will also be more trusted. This is a habit and in fact it happens like that. Not to underestimate Napoli, they are also a good team, but here we are just having an opinion.
I still think Inter Milan is the strongest team in Serie A this season. However, Inter Milan's overall performance has been a bit erratic and weak. If Inter Milan could have maintained their performance in the last few matches, Inter Milan would have been at the top of the table now. Inter Milan has lost points in two of the last three matches.
However Inter molan still has a chance to grab the top spot in the table. Inter milan is not far behind Napoli. Inter Milan is only 1 point behind. If Inter Milan can continue their winning streak, they will be able to grab the top spot in the table very soon.