Stoppies, although I have done nothing but skid the front tire on the bus, I managed a few littleones with the old r1.
Get going 50mph, squeeze tank with your knees. Click it in nuetral(very impotent, eliminates the big BANG whan it comes down, and is easier on parts). Lean into it, slightly apply the front brake to load the front tire. Then smoothly and progressivley squeeze the brake. The rear will begin to loft. Practice is key, don't expect to go hit the brakes and ride a 1000 foot stoppie.
Big tip: do not do these to a stop(although it's do-able). Keep it rolling. If you stop, or do it from 10mph at a stop sign, there is nothing more than luck keeping you from tipping over to the side. You need that gyroscopic movement to keep you balanced.
R1 to Busa
Two completely different purposes, it's hard to compare. Tell me what you want to know about them and I will try to help out. Had a 2000 r1 for 3 years before the busa.