Interesting argument. I see where you're going with this something like all fords are cars but not all cars are fords. But let's take a look at it. Just because someone says something does not make it true. Jeremiah 14:14 Then the Lord said to me, “The prophets are prophesying lies in my name. I have not sent them or appointed them or spoken to them. They are prophesying to you false visions, divinations, idolatries and the delusions of their own minds. David Koresh said he was a Christian. So did Jim Jones. Jim and Tammy Faye Bakker too. Do you think they really were? I'll give you that they might have even thought they were but were they? An interesting note of sorts, the generic or original Christianity goes something like this: Jesus died for all people to forgive their sins past present and future. Free will allows you to accept or reject this free offer. If you accept you are saved if not you aren't. So the real question is does the religion in question say this? Then the next question is something like this: Why are there so many versions of or as you put it sub sets of the main religion? We have to consider that their message might be different. If so, they might not be the real deal. If they are not, see the quote above. Yea, the quote is out of context but I think it stands on it's own. Not sure about the Suni vs. Shiite Muslim question. I'll have to ask a friend about that one. They may or may not consider themselves branches of the same faith.