Numbers printed without challenge
I looked at a number of news sources and they all seem to repeat the same misrepresentation of the numbers. It is said that 4000 CPUs were playing 6 billion hands per second for an aggregate of 24 trillion hands per second. Bloomberg manages 28.8 trillion, with all that precision they must be accurate ;-) Those "hands per second" sound awfully like clock speeds, perhaps dual core at 3 GHz.
Similar research reports tens of thousands of hands per second per CPU.