You're dead wrong. Guzzis are nothing like Harleys. For one they have a 90° vee and so they don't vibrate.
Those guzzi's are like harleys. I can't hardly tell that the models are that different from one to the other.
Well yeah, of course, and the shaft and configuration and all that, but the point being is the bikes pictured seem to look like they're marketing to a Harley buyer.
By the way, that race bike has a high tech drive shaft that eliminates the usual handling drawbacks of a shaft drive bike. I couldn't quite wrap my head around how it works, but I'm still trying.