What makes it different from others?

One of my all time favorites.

Good films always raise compelling questions, whether the format is fiction or documentary fact.

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.