I don't know... I too see nothing wrong with what was posted on the Gixxer forum. If I was going for a track day, my times would ultimately be faster on a 1K than the Busa but, what sold me on the Bus is the fact that, since the nearest track we have around here is 600 Kilometres away, and being 40 years of age, I can actually ride the Busa there and enjoy the rest of the weekend where as on a 1K, I would probably have to trailer it there and back to really enjoy the weekend.
Like I tell the people that ask me if they should get a Hayabusa... if riding around town and dragging your knee for an hour or two and then go and park for extended periods of time at the local hang out spot is your thing, get a 1K. If you have outgrown that (to a certain extent) and back road, scenic driving for days on end is more your thing, get the Hayabusa. The Busa will still carve the road but, it is not quite as nimble as a 1K. The real difference, for me, is that I can do it all day on the Bus and not have to worry about comfort.