chidokan

I have been posed a question that I thought some others might be interested in..

What makes a hachidan hanshi/ 'top instructor' be so far above his students that they all look up to him with the feeling of 'no hope of catching him'???

I have some of the answers, but not all.... perfect technique and timing are part of these, as is posture and projection, but what is the thing that makes the 'wow' factor? How do you get that 'presence on the mat'???