Ah, that's what you meant by the other remark. In that case, this isn't backing up claimed prior proxies and is a new argument.

New to you. Not new to me. Should not have been new to you either. Study and train to reduce communication overhead.

Sorry if my point was unclear. The point is that this is a new argument in this discussion. That means it isn't one of the proxies listed earlier, so bringing it up isn't relevant to the discussion of those proxies. To use an analogy, someone could assert that the moon is made of rock and that their primary reason for thinking so is that Cthulhu said so. If when pressed on this, they point out that this is backed up by other evidence, this doesn't make revelation from Cthulhu turn into a better argument than it already was.

Exercise for you: calculate expected IQ of someone whom you know to have IQ>x .

This isn't a claim that his IQ as estimated is greater than x+ epsilon, since we can't measure any epsilon > 0. If you prefer, the point is that his writings and work demonstrate an IQ that is on the right end of the Bell curve by a non-trivial amount.

There are a lot of Chinese academics who come to the United States. So what do you mean by very difficult?

Those born higher up social ladder don't understand it is hard to climb below them too.

That doesn't answer the question in any useful way especially because we don't know where Pei Wang's original social status was. The question is whether his coming to the US for graduate school is strongly indicative of intelligence to the point where you can use it as a proxy that asserts that Wang is "dramatically" more intelligent than Luke. Without more information or specification, this is a weak argument.