I have watched many Busa's get walked by liter bikes, I wouldnt justify the extra weight with the extra .3 liter difference. I mean you might walk around me over like 160mph but honestly, I dont see that speed often. Edit: 2007 CBR1000rr is 388lbs dry and makes 158.8 hp @ 11,500 rpm 2007 Busa is 478lbs dry and makes 175 bhp @ 9800 rpm Not much of a gap for 1300 Vs a 1000, the CBR is the lowest HP'ed liter bike anyway. So you have over a 100lbs and 17 more horsepower, and every 100 pounds in the 1/4 mile is a tenth almost so your not far off..... probably even with like riders. For shits and giggles: 2007 GSXR 1000 is 379lbs and makes roughly 160-165 2007 R1 is 381lbs and makes roughly 170 2007 ZX-10r is 386 and makes roughly 170