What you have observed is correct. The movie is partial. But that is the whole point of a documentary, it is meant to convince its viewers of one side of the story. For example, if you have come across a documentary by the name "Zietgiest", it will convince you that the 9/11 attacks were carried out by USA itself.
Anyways, I am glad to see that people are reviewing the movie intently. For a more general perspective, I suggest watching the movie, "Too big to fail". It is not a documentary but an actual movie, and sheds light on the downfall of Lehman Brothers and all that Hank Paulson tried to prevent other major Investment banks going down as well.
Regards
Kunal Naidu