Napoli is already at its record of goal in a season after only 23 day. They have a very great attack, and Genoa is offering a very poor game. Napoli being at home, I do not see them let go some points !
Napoli will have trouble against Genoa, although they are not as fancy as the first-team squad in Serie A last season, I'm sure Napoli can beat Genoa, and I would bet on them.