Who says they are all false? For all we know the real one is here, but because most people have a lack of knowledge of what to look for most can only quote specific scripture that their preacher tells them whether than actually learning what to look for when it comes to the real one. There is a reason why scripture provides us with everything we need to know about the actual Christ himself including something as simple the clothing he appears in. This is why research into every single one is important and to figure out why people follow them. I always remain neutral minded on each one until I have enough supporting documentation to make an official conclusion.