I didn't do a good job of being clear in my first post. In the video, she clearly points to the tip of the frame where the measurement is taken and says "There are other ways to measure the flexibility in the market, but I think ours is more accurate because this is where you hold the racquet and this (pointing to the very tip of the frame) is where you would impact the ball."
When a ball impacts the sweetspot, the racquet doesn't just flex evenly like a bow. The tip and throat both flex forward, bending around the ball. From the throat to the handle, the racquet bends in a curve in the opposite direction. So there area few things going on. First, I don't know that any static measure of bending will accurately reflect the dynamic nature of the flex that occurs when actually hitting a ball. Second, I guess it's arguable what contribution the flex, above the impact point all the way to the tip, contributes to the flex felt during actual hitting of the ball, yet this video demonstrates their measurement includes this flex. Third, the racquet is unstrung, and all racquets become more flexible when they are strung but to varying degrees.
It's easy to sit on the sidelines and nitpick. As a marketing video, it doesn't need to be scientifically accurate, and probably a scientifically accurate video would be incredibly boring and not make sense to a very large percentage of the population. But it just seemed like when you are introducing a new technology, you want to do so in a way that minimizes the detractors from pointing out what they may say is just marketing hype without any basis in reality.