Caliber Wars – 9mm vs 45 ACP: Who Wins?

Recently, I was answering a question on Quora about "which is better, the 9mm or 45 ACP"? These types of questions pop up often in various ways. I am starting a series called "Caliber Wars". This is not to start caliber wars, but to put to rest some myths, biases and mistakes often discussed when these questions are asked. Two facts: 1) any bullet can kill 2) every shooter has biases. Enjoy the "Caliber Wars" series!