I will tell you this, Harley riders do NOT have the riding experience we do, regardless of how long they ride. It's easy to coast along at the speed limit on a slow piece of steel. You really learn how to ride on 2 wheels when you handle a literal rocket that's nimble as a thimble.
Just because you own a Fast Bike, doesn't make YOU fast. Better to ride a slow bike fast, than a fast bike slow. There are a lot of slow Busa riders, as well as fast Hardly riders. It ain't the bike. Dumping a PC, pipe, turbo etc on a bike will make IT faster, but it won't make YOU any faster.
If you want to generalize, I'll bet that as a whole, Busa owners spend way more time talking about how fast they are, than Hardly owners do. Another thing I find to be true is this: If someone's gotta tell you how fast they are, they aren't.