Right. too too funny, Slipstreaming, boy works if you accelerate earlier and harder than a faster bike, and for your info, at the end of the straight, the engine power output works vs drag on its highest gear ratio, meaning it takes MORE time in 6th than other gear to rev UP.
Now you go and explain to us, how Marquez and Rossi had a consistently higher top speed than Lorenzo Slistream or not. resources.motogp.com/files/results/2014/ITA/MotoGP/RAC/AverageSpeed.pdf
If you knew anything about gear box ratio setting, you would know that in this condition, it was not the top speed which was important but the ability for the engine to rev FASTER at higher gears to pass at the end of the straight.
a: Without better acceleration, it is not possible to take the slipstream in the first place, and Lorenzo is not known to be accelerating hard at all, instead he relies on higher corner speed to exit the corner faster, as opposed to what you are trying to imply.
b: With better acceleration, the point where drag equals power output in 6th is reached earlier and the engine have MORE time to push to its maximum, to paraphrase K.R "it's not the top speed but the speed at which you reach the speed".
In this case both could have reached a fraction of km/h more with a longer straight, you never set up your gear ratio to hit the limiter before the end of the main straight or else you hit a wall and looses the last drop of engine acceleration and possible top speed altogether.
As i say return to your Nitendo, and YES you have a problem here, with reality, and a serious one.