I think the defense levels of Napoli and Rome are close to each other. Both teams conceded an equal number of goals. But we know that Napoli found a lot of chances and scored a lot of goals. That's why I think Napoli will score more goals in this match and they will be the side with 3 points. Actually, this match is very critical, if Roma wins, the teams' points will come very close to each other 
Maybe the match will look easy for Napoli, but actually Roma can't be considered easy to beat, even though some of Roma's previous matches have not been so consistent.While Napoli are still unbeaten for now, Jouse Mourinho has a target to break the positive trend of Spalletti's men, and we don't think Napoli will score more goals, considering Jouse Mourinho will be playing defensively, while Roma are also looking for full points in this match, to reduce the distance points from Napoli at the top of the standings.