sigh Why do we always have to misconstrue messages that conflict with our personal beliefs? :)
The GP was not declaring a winner. He was responding to overreaching title of the link. Yes there are similarities to JSON, and yes it may be faster and smaller, but only in certain cases. It is very relevant for the GP to point out that in the most common JSON cases (browser communication), those claims are basically false or only marginal.
This is reasoned argumentation, not arbitrary judgement to declare The One.