The Secret of Dirk Nowitzki’s One Footed Fadeaway Jumper

Here’s a slideshow of a possible explanation of what makes Dirk Nowitzki’s one-footed-fadeaway jumper indefensible/unguardable.
The Miami Heat had their hands full with this move. LeBron James didn’t guard him much. Chris Bosh had his lunch eaten. Dwyane Wade did block Nowitzki once or twice, but never when Dirk did this move.
Here’s what makes it special:

It may sound juvenile, but its the only other possible explanation.
The first one being that he’s just that good.
As Mark Jackson would say: Momma! There goes that man!