Is the Busa the best bike?? Interesting question. If your goal is straight line speed...sure its the best..nothing can top it (unless you unlock the power of the zx-12). Sorry busa owners
but when you get into the corners..nothing beats a short wheel-base light bike.
And anyone knows that any moron can go 150 in a straight line, but it takes true skill to zip through twisties. You can take some good skill level riders and put one on a 600 or 750 and he/she will beat a busa in the corners...get someone on an R-1, the busa hasnt a chance. But give the busa a straight away and your eatin dust.
So it depends what your looking for: You want a good ride, fun twisties, and lots of enjoyable miles...get a lighter, better handling sportbike. Want to pose all day, red light race, go 180 in straight lines, pull wheelies at 120+, and not keep up with your friends on smaller bikes in the twisties, then a busa is for you.
There are several videos out there that show the difference...the video MACH2 has an r-1 vs a busa...check it out..its shows the powers of both bikes. Both are excellent bikes, it just depends on what your looking for.