> The most important story of 2014 that most people ignored was the Chinese economy overtaking the US economy. (This is using the purchasing power parity metric, which incorporates differences in the price of goods, but the Chinese economy will overtake on other metrics soon enough.)
It is an important story, but I think it was largely ignored in the U.S. because it is essentially a domestic Chinese story. PPP GDP equivalence is a major step on the path of bringing Chinese living standards up to those in the U.S. and Europe. That is an achievement that will be good for the world, but it will really great for China.
If you want to compare China and U.S. as players on the global stage, then I think in most cases one will get a clearer picture of relative strength by sticking with nominal GDP. China's nominal GDP is bit more than half the U.S. GDP. It helps understand why the U.S. has the dominant currency, dominant military, etc.
China has grown its economy tremendously by taking the world's IP (by contract or theft) and building goods to export. That's how the U.S. caught up to Europe 150 years ago, so unlike other posters I don't think it's a terrible thing.
But it is true that China, to become a true economic superpower, must start creating innovative Chinese goods that other Chinese will buy, and which they can export. So Americans aren't just buying Apple phones that are made in China, but are buying Chinese products, the way they buy Japanese cameras or German cars.
That could be difficult to achieve, because the Chinese government does not permit free exchanges of ideas and views...which can make it hard to innovate. By its very nature, innovation makes people uncomfortable, and China's leaders do not currently permit things that make people too uncomfortable.