The word Truth also has multiple definitions:
truth
[trooth] Show IPA
noun, plural truths [troothz, trooths] Show IPA .
1. the true or actual state of a matter: He tried to find out the truth.
2. conformity with fact or reality; verity: the truth of a statement.
3. a verified or indisputable fact, proposition, principle, or the like: mathematical truths.
4. the state or character of being true.
5. actuality or actual existence.
Sorry about the cut/paste from Dictionary.com
When I hear the word "truth" I tend to think of example 3, (i.e. 2+2 = 4) as I think most people will think when they hear the word. Thus, I think the film will be ridiculed if any critic finds one part of the film which is not true. Additionally, when I hear the word truth used I think of the word dogma.
On a side note, one option would be to use the phontic spelling of the word and call the film: "Trooth".
Henry