I am afraid that the whole affair looked terribly self-congratulatory. Dawkins praised Hitchens as the most learned of all men he has met, (and he has met many learned men, since he lives in Oxford) --Someone who can quote and adduce references, at lightening speed. They called each other brothers and sisters and hugged. Hitchens had trouble speaking and cut himself somewhat short, not wanting to stand between the assembled and their refreshments, the bar and entertainments.
They looked like quite a "flock" to me, birds of a feather all flocked together. The congregation of free-thinkers, in convention, praising themselves. Sort of the same as other flocks, only prouder.
Something else, in this connection: http://rationalwiki.org/wiki/Sophisticated_theology
From a Facebook friend: Atheists celebrating their own ignorance.