I can honestly say that you get more consistently good pizza where the Italian-Americans migrated to (see Long Island and Monmouth County, NJ). However, as a resident of NYC myself, the joints that are left that do great pizza (you have to know where to look) are superior to anyplace else. Its just that you are not guaranteed a good slice like you were 30 years ago, when the joints were still run by Italians (or by Greeks and Albanians, many of the latter having spent time in Italy).
My faves: Arturos, Pizza Suprema (Manhattan), Catania's, Dominicks (the Bronx), Rizzo's (Astoria, Queens), DiFara (Avenue J, Brooklyn), Vesuvio and Pizza Wagon (Bay Ridge, Brooklyn).
I used to love Patsy's in East Harlem, but the family sold it to the employees from Puebla, and the quality and service has gone to hell.
I LOOOOVE Gino’s, which has a lot of Albanians. Fantastic food! Long waits but well worth it!
Ed