Actors - people who spend their lives pretending to be somebodies else.
Politicians - people who spend their lives pretending to believe things they don't.
Academics - people who spend their lives studying very narrow, often esoteric, specialties.
Why does anyone take anything people in these professions say about the real world seriously?
***
SAT PSAT GRE scores are irrelevant save as filters on those seeking higher education. Bottom line is: Did person get into college? IF so, puts him/her in top 30% of population. Did person graduate college? Put him/her in top 20% of population. Did person earn advanced degree? Puts him/her in top 7% of population. (Those percents are approximate, it has been a while since I read the figures.) College grades do not correlate with post-graduate career success, there is a demonstrated correlation between educational LEVEL and career success, in non-entertainment fields.
Fixation on how one politician or another compares in test scores, grades, IQ or University of graduation is like a little kid saying, "my-dad's-smarter-than-your-dad." It makes you feel superior, even if you're not. None of these factors has been shown to be a predictor of ability to manage the presidency.
The comparison made in the article of not only the educational levels, but also the direct experience of the two groups in world affairs is relevant in judging the probability that each group can understand the complexity of foreign affairs.
Joe