I think with any tech demo (or other corporate PR piece), it is good to assume the worst, because companies spin things to be as ducky as possible. This is a self-reinforcing cycle, because if two companies have identical products, then the best liar--er, marketer--will win.

(not to say this sort of behavior is exclusive to corporate PR. as the best and smartest person ever, I would never need to exaggerate my achievements on a job application, but others may)