Whether you or I like it, the Homosexual cause is being framed as a Civil Rights issue. Courts see it that way.
In light of this, the courts will see one situation as a denial of civil rights, and the other as a denial of a “racial type” insult to someone with civil rights.
This effort was misguided. It stands zero chance of being seen like this guy that requested the cake wanted it to be seen as.
The article answered your original question.