Part of it is just a natural human reaction to information overload (cleverly named “infobesity” on its Wikipedia page http://en.wikipedia.org/wiki/Information_overload).
It’s an important reason why we’ve kept our brand messaging as simple as possible in these early stages, as I mentioned in another thread.
People still may not believe those claims yet, but at least those statements have a better chance of being read than the complex technical descriptions our competitors often employ. Simplicity is king.