I feel like the more difficult the language, the higher I. Q. of the people who speak it, especially if bilingual. Thoughts?

I mean Japanese and Chinese are both very difficult languages to learn and Japanese people and Chinese people have above average grades and above average income in Canada. I also met a lot of intelligent Africans hand picked for immigration from Africa and many African languages are very hard to learn. I feel like people who speak only English, but do not know any other language, tend to get lower grades and earn less money than immigrants that are hand picked to enter your country from elsewhere. One example is that over 90% of the Chinese born people I know in Canada were STEM professors in China before they immigrated to Canada. Because immigrants are hand picked to enter the country for their academic credentials, they tend to be smarter.

I feel like the more difficult the language, the higher I. Q. of the people who speak it, especially if bilingual. Thoughts?
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