2.) correct which civil unions and domestic partnerships are not, hence not equal
3.) and your understanding is factually false. the fed doesnt even HAVE set regulations for this nor do the small amounts of rules that apply equal marriage in anyway lol
4.) property, taxes, medical decisions, child rights, testifying against each other, etc etc etc
You should educate yourself more about this topic before making false claims
Im sorry you are severely misinformed on this issue but the fact remains they are not equal and again that fact will never change.