Umm. .. are you serious? Take a closer look at the video. If that guy had to match acceleration and speed with the WS6 things would be pretty windy on the scooter. Also, that kind of acceleration on a little board most certainly would cause the kind to do a wheelie. That quy would have very poor stability.
To match power to weight ratios the scooter would need something like 20-30 horsepower, which I suppose is doable for a very short time, but with one gear I doubt the little motor could get to peak power quickly.
And at high speeds with teeny tiny tires with no suspension that kid would be toast.
this has been discussed in numerous other threads.
most came up with a conclusion that it's fake
due to following reasons
1. Modified WS6 would have broke traction on hard acceleration in the beginning, but no signs of that anywhere
2. Wind resistance on the goped would be too difficult to go too fast.
3. That ws6's owner came into conversion but he never answered any of the questions regarding the race.