China was stagnant for centuries and then suddenly and seemingly miraculously, in the 1980s, began to industrialize three times faster than the West. What changed was not China’s culture, which presumably was the same in the 1970s as it was in the 1980s. What changed, starting in 1979, were China’s economic policies.
The same is true for Japan and India. Had Romney spent more time reading Milton Friedman, he would have realized that historically the key driver for economic growth has been the adoption of capitalism and its related institutions and policies across diverse cultures.
The link between economic policies and performance can be seen even in the country on which Romney was lavishing praise. Israel had many admirable traits in its early decades, but no one would have called it an economic miracle.