nope, the fact is that the old SRAD GSXR's are not as powerful as you think, the place that rolling roaded it had a long list of SRAD's that had been done and none of them were over 95BHP.Now I'm not anti ZX6 but the fact that a stock gixxer has more power than the "improved" gixxer you described, I would think that whoever tuned it screwed up.
i had ridden the Gixxer and TBH it actually felt slower than mine, it had better bottem end power but wasn't as consistant through the rev range.Shame it's not available for a comparison, would like to see the results if you where to ride the gixxer and your bro the ZX6 and see who comes out ahead. While riding safely within the speed limits of course.