Acceleration from 0-100 is a combination of torque (launch) and power (sprint to finish). For bikes of over 125cc, you don't really need much power to get to 100km/h as they are so light. This is why anything with over 80bhp can get to 100km/h in approx 3 seconds, and anything with over 50bhp can get to 100km/h in approx 5 seconds.
The AN650 rider does hold the rear brake whilst revving the engine to over 4000rpm which does load the transmission in a manner which is not healthy for the bike. However, it is effective in demolishing this sprint by removing the 'take-up' time the transmission needs.
When I posted this link originally (a 'Thanks for the link, Lycheed' would have been nice, JC...) I think a lot of this was already dicussed:
http://burgmanusa.com/forums/viewtopic. ... ght=060mph
For those that don't read Japanese, the point of the site is to allow riders to have an idea of what type of car their bike performs similarly to. I also own an X11 which ranked No 4 in the top ten video. I don't think there are many cars that can manage the sprint in 2.4 seconds... That said, a Lan Evo and Skyline GTR get close with 4 sec times.
This is far from accurate, and really more fun than an oracle of information.