Even the median income comparison is probably too favourable - Wuhan and LA are apples to oranges. I'm sure LA is one of the higher-income cities in the US, and Wuhan is one of the lower.
LA actually isn't super high. Median income is only about 2/3rds of the real top cities (DC suburbs have a median of almost $100k, LA is more like $60)
TylerE|6 years ago