I guess I'll speak up as a religious conservative. Of course this is my opinion only - I don't claim to be a spokesman for anyone else.

I saw the Harry Potter movie (haven't read the books though most of my children have) and enjoyed it thoroughly. I found nothing offensive to my beliefs, keeping in mind that it is fantasy not reality. I've read LoTR many many times, and the Silmarillion at least five times (it's a much more difficult work). I've seen Fellowship of the Ring once and will no doubt see it again. In my opinion, Tolkien is much deeper than Rowling. I'll admit that my opinion is somewhat uninformed on Rowling.

I have come to the personal belief and understanding that Frodo, Gandalf, and Aragorn represent three separate aspects of the character and attributes of Jesus Christ. Frodo represents the humble, saviour aspect - doing for the world what was impossible for the world to do for itself. Gandalf represents the divine, godly aspect. Aragorn represents the kingly (King of Kings, Lord of Lords, Son of David) aspect. Each goes through a death/ressurection cycle (symbolic, or in the case of Gandalf, literal) - Gandalf in Moria, Frodo in Shelob's lair, and Aragorn in the Paths of the Dead - just as Christ died and rose from the tomb. Many other Christly attributes are apparent in one or more of them - teaching, prophesying, and healing, for example. Whether Tolkien did this conciously or not, I do not know; but I fully believe he was capable of it. Whether Rowling is capable of such depth, I don't know; but I give her full marks for creativity and story-telling ability.