They just did this by sinking a bunch of money into it; mostly what makes it the fastest supercomputer is a tricked-out interconnect. Plus we still have #2, #5, #7, #8, #10...
I think you are missing the main point.
The Chinese communists who till yesterday were a third world nation, are now, thanks to the money they made from us from favorable trade (after they spent a lot to elect Clinton), in a position to be ahead of us with nothing to slow them down.
While the Democrats are considering cap and trade and the use of the EPA to control and further slow our economy down and more reasons why we cannot produce our own oil, the Chicoms are drilling of the coast of Florida and are signing contracts for the Brazilian offshore oil that the US is financing.
As a computer guy you must be very logical. Do you see any logic in what is happening?