I saw the movie earlier today. Sure, it may not have been a great flick, but it was ok. Not nearly as bad as OP is making it out to be.
I think the main problem with it was that the story was too rushed. I went in there expecting to see all the events that lead up to the war, like how Lucian and Sonja's relationship first started, but that wasn't the case. When the movie starts off, Lucian and Sonja are already together. Really though, I guess if you saw the first movie, there's no point in seeing this one.