These are not bogus statistics. These graphs show the average of all the millions of actual speedtests run in the respective countries over the past 4 months.
The apologists for the US's poor showing usually start by pointing out that the US has much lower population density than South Korea, Sweden or Bulgaria. Of course that doesn't hold water if you compare Seoul, Stockholm and Sofia to New York, Los Angeles or Chicago. In Seoul, Stockholm and Sofia consumers can get 100/100 Mbps Internet access at affordable prices (e.g. $13/month in Stockholm) while such service isn't even offered to consumers in New York, Los Angeles or Chicago.
I attended the Nantucket Conference ( #ack2011 ) for the first time last year and found it well worth it - partly to increase my local network here in New England (versus all my many friends in other parts of the world); but also for specific case studies that held lessons for me and for netBlazr. I'm here again this year and the program has just kicked off with three game company CEOs talking about what's up in their space.
Mostly I expect to be taking notes in the form of Tweets (@brough) so follow me there if you are interested.