Practice is what made him that good and if anyone was to practice as much as he has, could be just that good in time.
I'll argue with this one just a little bit:
Some of us have a natural aptitude for some things, and don't require much in the way of practice to become very good at them. We'll become very, very good at them with little effort.
On the other hand, some of us seem to be cursed at some tasks, and can never get to be more than mediocre at them, no matter how hard we try, or how long we spend practicing. In other words, I believe there are some things that some of us are just never gonna do well, no matter how much effort and attention we devote to learning them.
Fortunately, most fall somewhere in the middle, and can learn to do about anything, given enough time and work.
So, my thinking is that even though practice is great, and can cure most ills, there's nothing like natural god-given talent to really get the job done and show folks how a thing is supposed to go.
J.C.