Jeffrey Deitch is the Jeff Koons of art dealers. Not because he's the biggest best or the richest of his kind. But because in some ways he's the weirdest (which is saying a lot when you're talking about the wonderful wicked lovable and annoying creatures known as art dealers).
There are two way of establishing a reputation one to be praised by honest people and the other to be accused by rogues. It is best however to secure the first one because it will always be accompanied by the latter.