the statistics refered to by bogart did not mention one crucial data: percentages and fatalities involved in accidents involving the same type of vehicles, as againts involving other types and accidents wherein no other vehicle was involved. like in motorcycle to motorcycle or car vs car accidents, or car againts bus, or motorcycle vs cargo truck.
if those data are available then the picture will be clearer. i doubt it if you would rather be in a motorcycle if the other vehicle involved is a car.
i've had 2 accidents in the past 2 years, both involving a motorcycle (well 1 motorcycle and one tricycle). in both accidents the motorcycle rider admitted their faults. in the first accident, one motorcycle cut in front of another motorcycle forcing the poor guy to swerve and hit (or in fact he was hit by) my car. not my fault, he was the one who swerved. in the one involving a tricycle, the unlicensed minor driving it was picking passengers on the left side of the road and then suddenly made a right-hand U-turn while i was passing him at 10 kph. his tricycle "bumper" pierced my front bumper. i even gave him a warning with the horn but he said he did not hear it since his motor was revved up.
i'd rather be in a tank but they don't sell them to the public yet!