You're example assumes everyone is the victim. Except that all side collisions and rear ends could be avoided by the stiking vehicle stopping faster. Which vehicles are statistically more often found as being the striking vehicle? It's likely that larger vehicles which can't stop quickly are. And in your example you use an SUV as the plowing vehicle, probably because it's mostly assumed you'll be hit by that type of vehicle, partially for the reasons I just stated.

Again, with the biker statement, since you'll never find a data set that would show accidents avoided on the particular vehicle there's a huge swath of underrepresentation of the reality. And one can argue proportionally bikers are in more crashes because there are less of them overall on top of the fact that most drivers of cars and trucks do not pay considerate attention to smaller vehicles.

And finally my comment about the "friends with fast cars" was a tongue in cheek response to the fact that the parent I was replying to made a large jump by saying SUVs are safer because of size and weight.