Had mine for one season(6mo or so). Havent ridden the R1, so I cant really tell you. I can compare it the gixxerk5.
Power delivery is pretty linear in both bikes, but the zx10 has less throttle responce than the k5. It takes a little longer for the engine to respond to a sharp throttle increase, I.E. its less likely to wheelie off the throttle (That doesnt mean it wont..).
I understand that the R1's have that hump in the power curve, where the power first bogs a tad, and then jumps up like mad. Some people love it, some dont. The 10 has a simular effect around 8k, but from my understand it is much much less pronounced (You have to be looking for it to feel it.)