Firstly, Tolkien's elves came primarily from Celtic mythology, and secondly, Tolkien didn't just steal ideas from the mythologies he drew from. He used the elements from them with care, making sure that he didn't misuse those pieces of the story for something they weren't meant to be. He had, you might say, a certain respect for those mythologies which he drew from. In fact, he had a distaste for the Chronicles of Narnia, since Lewis seemingly combined Roman, Germanic, Celtic, and Middle Eastern mythologies, as well as Christian beliefs, arbitrarily. And both of them were extremely careful with the symbolism they used. Rowling wasn't cautious about it at all. And while you may think that's insignificant, it is a VITALLY important part of the story. It's what really makes a story stick with someone, even if they don't realize it. It's the way that a story influences a person's thought pattern, for good or for evil. LOTR, for example, was carefully written to be a story that conveys hope, that one day evil will be ultimately defeated. Narnia was the same way. H. P.? Not so much, I'm afraid. It kinda conveys the idea that, once the excitement is over, life becomes the boring, same thing it's always been. It doesn't offer hope. It really is just a story about some kids who play with magic and manage to destroy a sorcerer in the process. And after that, they kinda just fade into the background. So, in that case, LOTR really does have a better plot. Not only is it about destroying the villain; it's also about restoring the King to his throne, and healing the hurt the villain caused. I'm not going to pull the theological issues card, since I don't know if you are religious or not. But, nonetheless, I'm glad we're having this discussion. It's really made me think.