http://www.huffingtonpost.com/seth-abramson/dislike-peter-jacksons-em_b_2342591.html
Above is the link to a very good article about the Hobbit movie. It writes about how little the critics actually know of Tolkien, and sometimes of films, also.
For my perspective, when I saw the LotR trilogy, I loved it as a film, especially the Fellowship was a real treat and a great emotional journey. But for me the Hobbit: An Unexpected Journey is way superior as an adaptation. It really stays much closer to the original material (especially as intended by Tolkien in his latter days when he went to write the Quest for Erebor). And it does not have any of the previous misahap of the likes of the Army of the Dead or Denethor being simply mad. Even as a film, it has a better acting with Freeman being a much more enjoyable Hobbit than any of the former movies (perhaps safe Ian Holm himself) and Richard Armitage seems a perfect Thorin as his character becomes a beautiful mix of Aragorn and Boromir - in its tragic majesty. As a Tolkien nerd of sorts, I could not recommend the movie more.