Read my post with the link upthread. It stated that some quite cheap cars had the highest death rate
per million registrations. This takes into account the greater number of them.
EDIT
Here's something I found...
As for the insurance point, read Phil's post "My Civic Type S, costs more to insure than a R33 Skyline. Maybe the insurance is factoring in the type of driver that usually owns that kind of vehicle." which also takes that into account.
I ask again, if more poewrful cars are more dangerous, please show me any stats that show a correlation?