Hurt report does not address Ninja 250's vs. 600's. What is the point of bringing that up?
In fact according to the report the most frequent accident configuration is the motorcycle proceeding straight then the automobile makes a left turn in front of the oncoming motorcycle.
So are you saying the Hurt Report says a Ninja 250 will avoid this scenario? No.....
Traffic awareness and good navigation dictates survival, not displacement.
From MAIDS 2009. Motos 501cc to 750 represented 22.4% of all vehicles, 39% of just bikes bigger than 50cc. 126-250's were 7.1%.