Well, you could take positives for Roma from that game if you wanted to - they do undoubtedly have a greater organisation and resilience than in previous years (not that that is saying much) and they didn't seem terrified by the escalating pressure/expectation, but I'm not sure there was an awful lot else that was good about their performance.
They didn't really look like hurting Napoli in general play (I can only recall Gervinho's shot from the left in the first half) and they certainly didn't look comfortable defensively.
I wouldn't be overly critical of looking capable of conceding against Napoli because Napoli's attack is very strong and the play leading up to Napoli's two clear chances in the first half was good.
However, I don't like the balance of this Napoli team. I believe they are defensively weak and can be got at. Roma barely looked like creating dangerous situations, never mind actually creating a clear chance. The one chance they did have came from Napoli giving the ball away badly when under no real pressure.
Now, you can argue Roma's plan was just to keep it tight in the first half and wait for the game to open up in the second half (Pjanic's goal meant they never had to allow the game to become open), but then I'd be more critical of Roma for allowing Napoli two clear chances.
Not got any sympathy for Napoli losing, mind you. To have two clear chances like that and not take at least one is poor.
Good to see De Rossi back playing at something like his best.