Again, "game" vs. "real" logic.Explain to me the difference between spinning a sword around in a circle really fast and spinning a sword around in a circle really slow, both actions are spinning the point of the blade around in a circle.
Game logic dictates both are the same, as you just pointed out. It's a silly mechanic you do to get through a puzzle.
In the real world, however, your eyes move in radically different ways when tracking a Y axis circle as opposed to a X/Z axis circle.
Tracking a "vertical" circle results in the eye making a full rotation.
Tracking a "horizontal" spin movement results in the eye panning back and forth between right and left... horizontal movement only, never a circle.
There are two ways to move the game sword in a circle, but the goal ISN'T to move the sword in a circle -- it's to get the eyeballs to move in circles.