I still think this movie was, by far, more superior than XIII. That aside, a lot more could've been done with the concept at hand, and there were some missed opportunities. But it's kind of hard to put any blame on that, in my opinion, because of the circumstances behind this sequel. Universal dug this franchise back up after a near-nine-year hiatus, which means a lot of the main crew (if not ALL of the crew) was different, which means the storytelling and creative decisions would naturally be off compared to previous sequels. Plus, I got the feeling that this movie had a much tighter budget compared to previous sequels, which might explain the problems
@Sarah described with the animation.
So yeah, I personally think it's hard to judge the film based on the circumstances of the production.