I have experience with Government contracting and it is never a good thing to call your Government customer a “liar”.
I thought the same thing too. This guy apparently lacks marketing skills!
Yes, you could probably get away with suggesting the testers weren’t competent, but when you say they faked the x-ray data, you probably have already decided you can’t win a fair contest.
I wonder if the guy who designed this thing had ever even THOUGHT of passing the heat/cold tests. They aren’t trivial.