Sil outclassed Paulie basically everywhere. For all his funny outbursts, Paulie was pretty much a complete scumbag in a gang of scumbags. He claimed loyalty to Tony but was quick to want to hook up with New York when it looked like he could benefit. He played that BS with Ralph over the Ginny Sack joke IIRC just because he didn't like Ralph and to try and get some points with NY.

When Christopher is made he tells him that if there's any problems, with anyone, to go to Tony and later when Chris does so (over Paulie coming over and smelling Adriana's panties) what does Paulie do? He gets pissy and threatens Chris if he ever goes over his head again.