[sunrise_sunset]

High IQ ? Explain India , average income of $3,000 a year, and China, average income of $8,000 a year. Sorry. India in particular is basically like Sub Saharan Africa.

We are seeing a non representative sample because legal immigration from India and China skews towards the professional classes. It’s extremely tough to immigrate from India and China unless you are very smart and / or have money.

[cloudmountain]

India in particular is basically like Sub Saharan Africa.

True.
The Indian government promised to do away with the caste system. And so they did but the ancient and pervasive idea of superior and inferior people stays with them.

One misconception is that the lowest caste, the untouchables, are not necessarily poor. Some of them are quite wealthy.
Conversely the Brahmin class (most superior) contains its very own share of bums, dumbos and wastrels.

It just so HAPPENS that the untouchable class, the lowest, is the darkest-skinned and the Brahmins, the by-nature-uppper-class are the lightest-skinned.

[AnotherUnixGeek]

It's extremely tough to immigrate from India and China unless you are very smart and / or have money.

Have you seen how many Indian immigrants are busy staffing the parking lots of car rental agencies like Hertz or driving taxis? These people are not all wealthy - they're just hard-working and they place a very high value on education. And as a result, their children will not be working car-rental parking lots, they'll be middle-management or higher.