Basically what Sprry said... The archetypes are there, but they're comparable to a lot. The on-set of my Tolkien Studies class in college actually made it a point to reinforce that we weren't to get "trapped in Christian themes" because Tolkien denied them completely. People still draw them though, especially religious groups.
Like I said, he denied influences from his WW1 experiences despite it being a traumatic and extensive part of his life as a younger man. Many of his best friends died. I think he was subconsciously influenced by the war, but he denies any intentional influence put into LOTR... He was the same with Christianity though, if not moreso. I find him to be much more influenced in his writing by nature, and the organic, over religious overtones and things. Just my opinion though.