I had a Ninja 650R and my wife dropped it as a newbie rider, pulled the front brake with the front wheel turned. The dual front disc brakes are pretty touchy if you're not used to them. I dropped it once when I thought the kickstand was down and couldn't save it.
A friend just bought a new one for his wife (a newbie) and she dropped it twice on her first ride. The first drop she thought she was in 1st gear but was in 2nd so when it lugged it went down. The second drop was in the driveway, she put the kickstand down but evidently not all the way.
The 650R is not a heavy bike but it is a top heavy bike, once that upper mass starts to tip past center it is hard to stop. The kickstand is also set at a steep angle.
The America/Speedmaster has a much lower center of gravity and is easier to catch and upright before it goes down.
