That Flo test, if valid, don’t make the case for aero wheels at all.
They are saying that the difference between their 49mm wheel and their 77mm wheel is negligible. Even the difference between 49mm and 77mm + disc is hardly anything.
And 25mm tire on the 49mm rim versus the 32mm tire is about 1/2 watt. So 105% rule is meaningless?
Their chart shows only 1m20s to 1m30s savings over a Mavic Open Pro on a 40km TT.