Just one correction in that spiel will I address.
ALL religions are mutually exclusive.
Absolutely untrue. Hinduism is the world's only major inclusive religion. In that sense it is far superior to a Christianity which excludes everything except a Jesus it no longer understands. (if ever it did after the third century)
Christianity is lost. Spiritually dying if not already dead. If it weren't, it would not be looking for Shiva devotees to swell its ranks.
The main problem with Christianity (as understood today) is the lack of disciplic succession from Jesus. There is no living parampara. So anyone can claim to be a disciple of Jesus and believe all variety of stuff, which Jesus himself may or may not agree with!
The Hindu (Vedic) tradition mandates that one who wants to know God must find a spiritual teacher and inquire from him submissively and render service to him, as a disciple. And the qualities of such a spiritual master are delineated very clearly and in detail. The first and foremost quality is that he (or she, as the case may be - there have been women gurus) must himself be a disciple of an authoritative guru. No room for "self-made" teachers, who invent as they go along, making all kinds of wild claims and creating "truth" that is not in accord with the previous teachers.