It's hardly more "from the perspective of Daiba Nana" than the series itself, and its compilation film presentation leaves us with less to chew on than the main series. Some parts are presented differently in interesting ways, like the abridged depiction of Mahiru becoming unhinged because Karen stopped paying as much attention to her. But most of it is like the show, which is spectacular, especially in light of the second movie. So, even if this is a step down from watching the full 6 hours or so, it's still really good and the extra stuff in there for Nana *is* good, and it setsup the motif of the second movie at the end. It's worth a watch.

Also, the credits song is one of the best tunes in the franchise, IMHO.