Einstein was arguably the most academically successful person of the 20th century. For example, Time magazine described him as the preeminent scientist in a century dominated by science. According to Stephen Pinker, 34 billion people lived some time during the 20th century. If we normalize the distribution of academic success, Einstein was 6.53 SD more academically successful than the average human.
Assuming about 60 million Ashkenazi Jews lived during the 20th century, and Einstein was the most academically successful of them all, he was 5.53 SD more academically successful than even the average Ashkenazi Jew.