I did try the "experiment" twice being very careful to apply the same force to each wheel. I did it once by gently spinning both at the same time, and on the second one I spun them both hard simultaneously with the same result. It would be interesting to know who builds the hubs for AC - I didn't know until very recently that Zipp supplies the carbon rims to AC. I discovered that when I inquired as to what was holding up my wheel build at the factory, and was told they were awaiting a shipment of rims from Zipp.