"Software spots the spin in political speeches" vs. Developmental Altitude?

We now live in times where even software seems to be able to determine the level auf authenticity of a person's speech (see technology.newscientist.com/article/mg19926746.200-software-spots-the-spin-in-political-speeches.html) and they say: 

Software programs that analyse a person's speech, voice or facial expressions are building upon the work of researchers like Ekman to help us discover when the truth is being stretched, and even by how much. "The important thing to recognise is that politicians aren't typically good at out-and-out lies, but they are very adept at dancing around the truth," says David Skillicorn, a mathematics and computer science researcher at Queen's University in Kingston, Ontario, Canada. "The 2008 election has so far given us plenty of chances to see them in action." Skillicorn has been watching out for verbal "spin". He has developed an algorithm that evaluates word usage within the text of a conversation or speech to determine when a person "presents themselves or their content in a way that does not necessarily reflect what they know to be true". The algorithm counts usage of first person nouns - "I" tends to indicate less spin than "we", for example.

 Especially the last indicator - watching usage of first person or "we" language – seems to be in contradiction to the altitude awareness of a person (or candidate) in their usage of "I" (McCain) and "we" (Obama).  What do you think?