Hindus are the most open to other faiths, but there is no doubt that they believe they have the right one. There is really only one path by which an outsider can enter the fold. He must live a pious life and then, after many transmigrations, his soul may be at last reborn into a Hindu family. If we have learned anything in our quick survey of these major religions, we have learned that they aren't even on the same mountain. Aristotle called this the Law of Non-Contradiction.
Man is reincarnated after death.
Man is not reincarnated after death. Man must earn his way to God and heaven by doing the right things on earth. Man can't earn his way to God and heaven by doing the right things on earth. In each of these cases, A and B cannot both be true. They break the Law of Non-Contradiction.