Look at it this way, take two swords, a heavy dull one like a wooden bokken and light, sharp one, like a rapier. Does it make sense to use a bokken like a rapier? They are two very different weapons.
If you had a bokken, would poking your opponent with the tip be your action of choice since "blunt force trauma is blunt force trauma" or would your offensive action of choice be to bring the body of the weapon down on his head?Blunt force trauma is still trauma.