its not the bike, its the rider.

my buddy here at work has a old like early 80 somthing kawi 500. and he is running faster times at jennings than most . he goes every couple of months. i have never been, but i just know what he tells me.
he says there aer people out there running some bad ass times on 250s.
so it all come down to you.

and seeing from your other post, just cause you can wheelie and stoppie doesnt make you a "GOOD" rider