I admit, I didn't read all the articles on liter bikes as they aren't my forte, I am a Busa person now and proud of it.
I do know the previous owner of the Bumblebee set it up to chase down 600/1000s in the corners and blast them on the straights (his words).
I have read a bit about the liter bikes to know they have as much hp as a hyper bike and less weight. I would think their day to day riding would be troublesome but that doesn't negate the fact they are surpassing stock hyper bikes in performance.
Would I own one-nope as I now have my dream bike and I don't care if it isn't the top of the heap anymore...in my eyes it always will be.