How much better is the Cobra 2204/2300?

Why do race-winners choose Cobra motors for their miniquads?
Well this video demonstrates the quite significant difference in performance between a sport-class motor like the Quanum 2204/2300 and the Cobra 2204/2300. Indeed, the difference is stunning.
At almost twice the price, I won't be putting Cobra motors on all my mini quadcopters but if it's power and performance you want, the Cobra is indeed right up there at the top.