But take a large man (or even an avg size man) who prefers performance accompanied with as much comfort as you can have on a sport bike and a liter bike is a joke by comparison. Plus you can’t retrofit many of the gen 3 improvements to an earlier gen. These were factors for me.
If I wanted full speed it would have been a zx14 which is faster then all gen Busas...
But you're slightly contradicting yourself. The ZX-14 is more comfy than the Busa. It's just not as sporty. I think it's a hell of a bike and I quite like it, as long as I don't have to do a valve job on it, but if I were on a twisty Road, I'd be able to pass slower traffic in front of me with far more opportunities on the Hayabusa. The Busa is a potent salmon underneath you which you climb on and maneuver as a separate unit from you. You climb into a ZX-14 and become part of it.
I'm also going to rant for a short bit about racing. I love watching motorcycle racing, I find it enormously entertaining. But MotoGP for a few decades now has not featured the best riders in the world. It's featured the best midgets. Huge bikes in the 70s and 80s really favored American riders with dirt track experience, and I do believe there was a backlash against that. By the Europeans and Japanese. But when the manufacturers and the racing organization limit the fuel the bikes can use during a race, and don't bother having minimum weights for vehicle plus driver the way F1 does, you get a league that features the best midgets in the world. And that translates to the liter bikes they sell to consumers directly. I would love to love liter bikes. I still think most of them are geared way too tall for the twisties, as you basically don't take them out of first gear, but the truth is that I can't because they look (and feel) like children's paddock scooters when I am straddling one (I'm 6'5").
Economics also dictate that making all motorcycles use the same wheel and tire standards helps corporate profits, and the industry needs to prioritize fuel economy, and the technology has all gotten quite mature just in time to be phased out for Electrics, but boy were the Glory Days much more fun. I remember Rad Greaves racing a Hayabusa in an unlimited racing class. Hitting two hundred miles an hour on the straights where no other motorcycle could. I just wanted someone to put bigger wheels and tires on bigger forks and bigger swingarms. Yeah, I know you pay penalties in weight, but I would have liked to have seen that kind of experimentation of giving more power more tire patch to get around a track with a quicker lap time. We never really got that. So we never really got fastest bikes that even big guys could ride.
Comparing liter bikes to the Hayabusa really just can't be done. The whole industry is stacking the deck against the bigger displacement units. I love sport and hyper touring, and my gen one was basically perfect for that. There were times I was so in love with that bike words couldn't express it. That the Gen 3 will be even better seems fairly miraculous to me. Sorry to ramble, I guess I just wanted to add my agreement to it being an apples and oranges debate...