Evidently he found no Jewish sounding names among the top mathematic kids in the past 15 years and T-Bird used it as "proof" that Jewish kids are no longer smart enough for our best schools.
You don't seem to understand Unz's method.
Quote: Thus, it appears that California Asians are perhaps three times as likely as Jews to do extremely well on academic tests, and this result remains unchanged if we adjust for the age distributions of the two populations.
One means of corroborating these surprising results is to consider the ratios of particularly distinctive ethnic names, and Sailer reported such exact findings made by one of his Jewish readers. For example, across the 2000-odd top scoring California students in 2010, there was just a single NMS semifinalist named Cohen, and also one each for Levy, Kaplan, and a last name beginning with “Gold.” Meanwhile, there were 49 Wangs and 36 Kims, plus a vast number of other highly distinctive Asian names. But according to Census data, the combined number of American Cohens and Levys together outnumber the Wangs almost two-to-one, and the same is true for the four most common names beginning with “Gold.” Put another way, California contains nearly one-fifth of all American Jews, hence almost 60,000 Cohens, Kaplans, Levys, Goldens, Goldsteins, Goldbergs, Goldmans, and Golds, and this population produced only 4 NMS semifinalists,
a ratio almost identical to that produced by our general last name estimates. The 2012 California NMS semifinalist lists yield approximately the same ratios.
More quotes from the article.
Quote: The Putnam Exam is the most difficult and prestigious mathematics competition for American college students, with five or six Putnam winners having been selected each year since 1938. Over 40 percent of the Putnam winners prior to 1950 were Jewish, and during every decade from the 1950s through the 1990s, between 22 percent and 31 percent of the winners seem to have come from that same ethnic background. But since 2000, the percentage has dropped to under 10 percent, without a single likely Jewish name in the last seven years.
Quote: This pattern of third or fourth generation American students lacking the academic drive or intensity of their forefathers is hardly surprising, nor unique to Jews.
Jewish academic performance has collapsed. Large numbers of Jews get into the Ivy Leagues only because of privilege.