Actually, it's out in the real world that you WILL notice. The extra HP and torque is very noticeable, especially if, like me, you are 6'+ and over 220 lbs, and/or carry a passenger. I was riding with a buddy (about 150lbs) who had a 600F2. He raced his fairly often, and with different gearing and tweaks, managed low 11's. I went to the strip just for giggles, never having tried it before and, leaving the line like grandma (afraid of flipping backwards with all that traction), managed similar times, but with almost 10mpg higher trap speed. We went riding. We got on it. Guess what? I left him for dead, just twisting the grip, while he stirred the tranny like a madman, even though I weighed 70 lbs more, and my bike was slightly heavier. Why? I had a much longer period of high acceleration per gear than his short sharp peak. Whyzat? Big, flat torque peak, big flat HP peak, not a short, sharp spike. We switched bikes. Top gear roll-ons. He left me for dead, faster than I'd left him before. If you have 2 bikes with equal unladen acceleration, and one has more HP, if you add a heavier rider/load, acceleration won't be as affected because the power/weight ratio isn't changed as much.