I was wondering what was the purpose of this animation, since Chapter I basically followed the same narrative as the film from 2009. Well, Chapter II does add more stuff in, explaining some things left vague in the film, making the parallels with The Black Freighter subplot more evident and even having a slightly different ending which made a lot more sense to me.
I liked the animation, I found the voice acting good, and I rated this this high because when it came out I was blown away by the 2009 movie. I have to hope that without having seen it, I would have been just as enthusiastic about this animation. As it stands, it brings extra value, but not enough to justify its existence. I've heard a lot of people talking about how the comics are so much deeper and better. Why, then, were these two cinematic versions so similar?
Bottom line: Watchmen is a very deep and interesting story about personal and societal responsibility and moral sense. I think it's great! Whether you chose this or the 2009 movie, I recommend them highly. I just don't see the point of watching both versions, since they are very similar. If you don't have anything against animation, I think I recommend this version to the live one.