> The difference between China and Russia is 77x.

The population of Russia is ~146.7M [0]

The population of China is ~1,403M (~1.4B) [1]

This makes China ~9.6 times larger than Russia.

The US is ~327M [2], which makes China about ~4.3 times as large.

It's a big difference, but not as large as 77x.

[0] - https://en.wikipedia.org/wiki/Russia

[1] - https://en.wikipedia.org/wiki/China

[2] - https://en.wikipedia.org/wiki/United_States