The first chart says that the number of AI professionals in China is less than 10% that of the US, while the number of third-party cited AI papers is around 80-

The first chart says that the number of AI professionals in China is less than 10% that of the US, while the number of third-party cited AI papers is around 80-90%. This implies that either 1) each Chinese AI professional publishes many, many times more papers than a US-based one, which seems unlikely, or 2) there are many more non-publishing AI professionals in the US, e.g. working as a non-research engineer, than in China, where presumably many or most with the label 'AI professional' publish papers. Anyone with more knowledge/insight about this peculiarity?