This is only impressive if they didn't use any historical data at all to create the new super computer. If they did use historical data then the answer would be correct by definition. The way to test this is to use historical data make a prediction and then wait a year then compare to the real data only then you have any valid comparison.
That's really dumb. Why would you wait a year, when you have 35 years of data? You test the model on 1980's data, and see how accurate it was by checking with 1981's data, and so on. They can do that 35 times, if they're looking a year ahead. If they're only looking a month ahead, they can do it 12 x 35 times.