An average GSXR 750 with a pipe and map will make 140hp at the wheel. If you had a thinner head gasket and made 130, that is likely a product of a very stingy dyno, where you would see roughly the same numbers from a 1098.
Remember, this is for Superbike where you can change cams and so on. Is 150 hp out of the question for the GSXR?
Again, with the open class bikes making upwards of 175hp, how can the 1098 possibly compete?
Yes, you will occasionally see a $45k 1198r making 170hp, but that is not going to be normal...