Wearing my cynic cap today...
Here's an example of why there are not many real answers: One group of people claims O'Sensei could dodge bullets... Another group says that's a fabrication. Both sides believe they are right, and both cite hearsay evidence. The only real fact is that whether he could or could not does not affect our training, as we are not teaching or being taught how to dodge bullets now. What is more relevant than what O'Sensei achieved is what we
can achieve. I enjoy the stories as much as anyone, but sometimes a cake is just a cake. The mythology often needs to be de-emphasized.
Well, it's not hearsay - Gozo Shioda put the story in writing in "Aikido Shugyo" (page 189), and he's quite clear about having seen it with his own eyes.
Whether or not you believe him is another discussion