You can call it whatever you want to call it. You claim to be a lawyer, right? If so, you know that each ruling sets a precedent for future rulings. This controversy is in the court system. After the lawyers mangle the definition, there's no telling what "marriage" will mean.
IMO, if the benefits are the same, there really doesn't need to be one definition for all unions. It's like Wrigley Field, Yankee Stadium and Fenway Park. They play baseball on all of them but they use Field, Stadium and Park to describe their facility in their names.