but don't you see? a Muslim might well say the same thing as you and would be using your own form of logic, and you really have no leverage over him. faith is faith is faith, no matter what religion. there are many people without faith, or who have left faith, who fully understand these things, and understand that it's rather pointless to argue about the "truth" when it comes to faith, since it's faith, which by definition requires doubt, and it's not something that can be proven in any rational sense.
it might make you feel good to announce thatyou have a wondeerful and unique relationship to an invisible friend, and that Muslims (and, by extention, everyone who isn't Christian, which is the majority of the globe) are doomed, but that makes no more sense than a Muslim saying that all Christians are doomed.
ultimately, such attitudes are not just pointless, but destructive.