The problem Napoli is that, they are not in their peak form which is a big challenge for them to overtake Inter. However, Napoli can improve their performance and win the rest of their matches, they might be lucky because Inter will find it difficult winning the rest of their matches due to their involvement in various competitions. Inter is in their best form and might not be weighed down with fatigue.
If that is the case then it will be much more difficult to catch up on points from Inter Milan because of their inconsistent performance such as the draw they got in the last match against Bologna. This week Napoli will face Empoli and this should be a good momentum for them to get three points but if they get another draw then the chance to catch up with Inter Milan is much more difficult.
The last five matches have only been able to win two matches and the rest ended in a draw so many points were lost just like that. Even though Inter Milan's condition which has to focus on several matches can be utilized well by Napoli but they actually wasted the opportunity.