I'm a lore-fanatic as well, so some of the adaptions for the Hobbit have been quite....interesting, to say the least.
I think the similarity is down to having the same producers - Jackson didn't want to make that movie at first, only after del Torro canceled because of paying-issues, he took over. You can see that with all the new-looks and CGI stuff, Jackson wanted to create something entirely different to the LotR movies, but that alone wasn't enough, I agree.
Little over three weeks until the last one launches, I'm surely going to watch it, even though I'm not sure whether to do that in 3D or not.