Interesting! Maybe the movie got bad reviews because it didn't stay true to / wasn't as well done as the anime version? I wouldn't know as I've never seen the anime version, but I really liked the way the whole city was designed. It had a nice cyberpunk-esque to it.
The storyline was a little cheesy, but that's something I really like to see in movies, it has a charm.
I'm not sure why, but it all gave me "Mirrors Edge" vibes as well. All in all I think it was good, despite poor reviews