Ian, no need for you to be nasty, it is just hard to explain! If you put down the cash to cover it you could have a go on my bike! You are welcome to rev it to 13k rpm and see the difference between using 50% throttle, 75% throttle and 100% throttle!
100% throttle does not look like that video! It can look like the inside of an ambulance.
You need to break out of the performance car mindset where once you get over 50mph you can hit full throttle and just sit there watching the rev counter rise. These things need sensitive throttle control well into 3 figure speeds otherwise they wheel spin or flip.
Clarkson was sh*tting himself in the Veyron was he not? All he had to do was steer whilst computers did the rest. It had airbags, crumple zones, loads of grip and 550bhp per tonne. Now imagine if he had been on a bike with no protection, no computers, 1050bhp per tonne and about an 8th of the grip.
Using full revs is easy. But balancing the throttle is hard whilst you are accelerating that fast. Try playing Gran Turismo on a PSP whilst riding on Nemesis at Alton Towers or something - albeit if you crash in the game the ride will come of the rails and you will die.
Do you see what I mean? Five or so seconds to 100mph doesn't give you much time to think about what is going on and control the throttle. Hence why 600's can keep up with 1000's on duel carriageways. The 600 can be kept pinned but the guy on the 1000 is thinking "how much more can I open the throttle".
Combine all that with looking for slow cars in the inside lane at massive closing speeds, hanging on for dear life, your eyes being pushed back into your head etc etc. Could you extract 100% performance out of it? In a Veyron we both could, on a 1000cc bike we aren't good enough.