George S. Ledyard
A former teammate of my friend was watching and later said that Sensei saw the uke coming and simply went into hanmi whereupon my friend simply bounced off him and fell down.
What allows Vladimir Vasiliev to hit you with strike that looks like nothing and put you in the ground? Or Ushiro Kenji to change the stability of your structure by how he touches you with his attention? What allows someone like Kuroda Sensei or Angier Sensei to drop you and you don't feel them doing anything? I am over 300 lbs and these guys, less than half my size, can do this.
I would argue that all of those things are just different ways of using the same thing. Hitting, as in your example with Vlad, is somewhat a part of the same thing, although I'd have to point out that in my experience with hitters, quite a lot the good ones learn to put their dantien in their fist, etc., even though that doesn't necessarily mean they can apply that narrow aspect in anything else they do.
But the point I'm trying to make is that it's all the same thing and you begin to see that, after one's practice develops the normal perspective.