The Wuhan lockdown was also far more strict.

And measures were not limited to Wuhan. By the time restrictions were lifted in Wuhan, the Chinese government had implemented quarantines, surveillance, contact tracing and testing procedures throughout the entire country. While here in the US we have a hodge-podge of approaches from each state with varying success, and no restriction of movement. Not saying we should adopt authoritarian policies, but we'll only have the virus under control when every US state has it under control.

Wuhan was also the biggest epicenter in China and that is where it originated with lot more cases than in the Bay Area.