Nilay, for your safety, I would advise you to go through the link which I am posting below, shall be of help to you.
Braking
How to increase rear wheel traction? Better Braking - Motoroids Forums
Trains top out at 110kmph as per R15's speedo. Have raced with one for over 30kms, over 110, i used to gain, below 105, I could see more than the engine.
Can't believe such a question can be asked?

Do you believe the 250R beat the R15 just because of a longer wheelbase? wow, you are not serious are you?
If this would be the case, 'busa would be beating the crap outta 600's on a race-track, which isn't the case.
250R retails for 2.8L, R15 for ~1L, why?
The frame of R15 is more rigid & advanced, but however modern it may be, it can't match for a missing pot & almost the same ps more.