Let me tell you why I rated this documentary so low...
I HATE ORGANIZED RELIGION. It's the source of more misery and suffering throughout human history than anything else.
Had this story simply told the story of a young man aspiring to great things, I would have applauded it. But the religious angle was ridiculous. What's next? A documentary on Tom Cruise entitled, "Scientology Method"? The story of a brilliant method actor who just happens to believe in the ramblings of deceased 1950's science fiction writer.
Organized religion, from Christianity to Scientology, is about lies and profit. Period.
Since the folks who made this movie chose to focus on religion, versus simply telling the story of a young fighter, allow me to give you my two cents on the subject.
Have a nice day.