What a novel idea for a post! I wish I'd thought of it.
Let me see, one's bigger, one's faster, energy's about the same, one holds more, one has more momentum. One is the post popular military pistol cartridge in the world, the other served brilliantly in the U.S. military for nearly a century.
It seems that there is a wealth of differences and information to discuss. Why hasn't anyone posted anything like this before?
I think I'll also write to my favorite gun rag and suggest that they write a few articles on the topic. If they insist on paying me, I'll split the money with you BigG.