This reminds me of the 'wand choosing the magician' thing in the Harry Potter movies. Could be, although when I empty my mind of mundane thoughts and look into the Void I end up getting bored and wandering off.
Consider the sports car. There are many, are there not? And they all go fast, hug corners, brake like they had anchors, and make the pulse race for some. However, even if they are all equally capable, a driver who has a preference is going to do better, I would say, in the car they prefer than in the car that they don't. Even beyond familiarity with the controls, there is knowing what the car can do and what it cannot do. Where you can push it past design parameters and where you cannot. Thus, on any given Sunday - a driver in Car Brand X beats a driver in Car Brand Y - and then the next weekend, the opposite.
A photographer with a distinct preference for a Leica M body is going to make better photographs with a Leica M body than with any other sort - if my analogy holds water, that is.
But I'm in metaphysics up to my ankles now - past this, there be dragons.
So Mote It Be,
Bill Mattocks