Again they are refusing him service based on his religious belief. His "god hate gays" is based on the bible , its not based on any personal homophobic agenda you might attribute to the statement.
So no the guy didn't get the exact same service as everyone else, he could not get a cake with writing on it, as everyone else can.' And non-christian can get the service.
Did the bakery ever claim it would put anything you want on the cake? Would they make a "I hate you, Jim" cake? Just because a person is religious that doesn't mean a company has to do what every they want them to.
He did get the same service as he could get any cake anyone else could get. Nobody else was allowed a cake like that so how is it discrimination?
Did they ever claim they would not put anything on the cake? did it have a sign in the window that said "text subject to bakers approval" ? If not then we have to assume that yes it did have a policy of putting pretty much everything the customer asked for on the cake. And do i have to show you lawsuit after lawsuit after lawsuit won because they didn't put something in writing....
Also again again again again he did not receive the same service, he wanted a cake with writing, he did not ask for a cake without, so its pointless to even argue that he wasn't refused service because he could get any other cake. Because thats not what he asked for.