What makes it different from others?

This is a must-see and one of the best documentaries - and films - of this year.

The thing I enjoyed most about the film is the fact that it doesn't shy away from being a super-sized-cliche;

If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.