Does the data this author provides contradict his assertions? From NLSY79 data, the gap for wealth between low to high IQ is very large compared to the gap in t

Does the data this author provides contradict his assertions? From NLSY79 data, the gap for wealth between low to high IQ is very large compared to the gap in the Terman data where the difference is much smaller. To me, this agrees with Gladwell's conclusion that IQ above a certain point stops being very relevant in predicting wealth.