Looking at the world, people with an IQ of 130 or 160 may have an advantage in a few areas, but "winning at life" really doesn't seem to be one of them.

I suspect you will find a correlation between the two. Certainly, if you examined the world's 100 richest people I would be very surprised if the average IQ wasn't well above 100. The question is, why does intelligence not reliably lead to winning.