For Roma I think they can do it but for Napoli they won't be able to do it until the end of the season. Napoli still have to improve their overall performance and even though they have just won against Juventus, this cannot be a strong guarantee for them to continue to progress with consistent wins.
Napoli need to win a lot to catch up on the existing points, the victory against Juventus cannot yet be a benchmark, even though judging from the statistics of the matches that have taken place, Juventus is more favored but this kind of thing is not uncommon to find in football, at least Napoli needs to win in a row without any goals in their net to catch up on the existing points.