Here in the Bay Area CA we have our share of accidents. They seem to be split equally among the riding community.
Seen many Harley/Cruiser crashes. But, personally, I have seen more sportbike crashes then cruisers, likely because the roads I often ride and the company I keep.
It's ignorant to assume the type of bike is the cause of a crash or to point a finger at cruiser riders. It's also wrong to say a Harley has inferior stopping ability. A Harley Bagger will stop as fast as your VFR, and a Sportster will likely stop faster. Don't take my word for it: Ask Lee Parks. He tested motos and braking for a living. It's improper braking technique that can be a problem.
Unfortunately, sport riding comes with a "culture of speed", in which the newb riders are looking up to the guys who are posting their knee dragging street riding photos/videos online (no offense meant to those that do post vis). They do the natural thing: they emulate. Then, they crash. Seen it too many times to count.
I am no angel. Broke every driving law there is. Likely will break several next time I ride. Just pointing out that crashing is not related in any way to the type of bike you ride.
I was not at the crash posted above, but the description does make it sound avoidable. Imo, riders often follow way too close and have far to much faith (unfounded) in the stopping ability of their motos and themselves.