Look at the photos of the B-45 bomber that crashed into the Empire State building in 1945. Essentially, it went entirely into the building. What are you expecting? That it would be like a Warner Brothers cartoon, where the airplane goes "splat" against a mountain cliff face?

I don't think you have anything to back up your claim, since these events are so rare. And since they are so rare, there is not much of a basis to draw generalizations from.