They ruled that Gays don't have a right to "marrigae" but that it is unconstitutional to deny all the rights and responsibilities to same sex couples. They directed the legislature to either change the existing marriage statutes to include same sex couples or create a new structure with all the same rights and responsibilites of marriage. Oh, and the legislature CAN call it something different if they want to. How about "Second Class Citizenship." Of course, if they have the guts, the legislature can call it marriage.
The New Jersey Supreme Court obviously regards the denial of equal marriage rights for same sex couples as unconstitutional. They just didn't have the guts to do the right thing.