New Jersey isn't just one accent. North Jerseyans cringe at the South Jersey accent which sounds awfully Philly, and South Jerseyans cringe at the North Jersey accent, which is New York inflected.
Of course, those in the know will tell you that there is not just one New York accent. There is the upper class and the lower class, the Brooklyn, the Bronx, and the Long Island variants, the Jewish, the Italian, the Irish, the Latino, the Caribbean and the Black variants.
You hear someone talking New Yorkish, and you can tell their heritage, their address, their education and their socioeconomic status.
Blimey! I'm a regular 'Enry 'Iggins, I am!