In a recent mag article the GSXR 600, GSXR 750 and the K 10 were compared. Even though the weight difference was less than 15lbs the 600 was noted as handling a lot better than the other 2 bikes. With the 100lb weight difference in the Busa does the handling go down in a linear fashion with every pound of weight or does it taper? How about driver weight as it is not fixed? If 2 drivers of equal skill, but one 20lbs heavier, will the handling be affected to a noticable degree?