Placement is pretty far down the list, too.
First is how not to get in a fight. Second is how to defuse one that is developing. Third is to actually be carrying a gun. Fourth is to be able to handle yourself well in a fight that doesn't have guns. And then after that is placement.
And about 100th place is caliber.
As a white guy in a democratic city, I don't have self defense rights depending on the melanin of my attacker. So, caliber discussions get put basically last.