Yeah, and that proves what?
You’re jumping into a whole 'nother kettle of fish with that comment, since the method of damage was not really due to the locomotive alone, but also the action of the wall on your body. Similarly, if a bullet were expanded to the size of a pillow, it’d do a lot less damage to you, so the shape of the object matters quite a bit as well. A good example is in a sharp blade versus a stick of the same weight.