[majos]

I suspect that lower GPA students have higher variance but lower expectation outcomes than higher GPA students. Higher GPA students, at least when the coursework is serious, tend to be at least one of extremely bright and extremely conscientious (I would guess most are a little of the former and more of the latter).

The conscientious and prudent possibly have less tolerance for or interest in risk, so they're less likely to hit a home run, but their floor is pretty high.

At a more general level, I'm not fond of the common idea that people who are proficient in area x are probably deficient in area y (where area y is usually implied to be more important). It often seems to me like a face-saving technique for aficionados of area y.