hmm, perhaps
I don't think I'm discounting jobs due to his personality; i'm not prone to mistaking affability or gregariousness for intellect.
Most of the very smart people I listed would likely score lower in agreeableness and openness than jobs.

I'm not convinced that running a country/multi billion dollar company requires the same level of intelligence as, say, inventing calculus or proving fermat's last theorem. nor are they similar levels of complexity. while its easy to say it's an apples/oranges case, I don't really think they're in the same tier.