US Economy vs China Economy

The US economy leads in per-capita wealth and technological innovation with a $28.7 trillion GDP, while China's economy is the second-largest at $17.9 trillion but serves 1.4 billion people with lower per-capita income of $12,720 versus America's $85,140. The US maintains advantages in currency strength, capital markets, and R&D spending, while China leads in manufacturing output and foreign direct investment attraction.