I'll bite: The CEO would do just fine at flipping burgers if that were their job. Honestly, after only a few weeks of training, the CEO will probably do better at flipping burgers than the average employee. Everyone sucks at a job when they start out and it's a strawman to say that if you took the CEO to flip burgers for a day, they would suck at it compared to someone who has been flipping burgers for years.
IQ helps predict job performance even among unskilled labor. CEO's tend to have high IQ, so you'd expect them to perform better than average people in unskilled labor as well once they have gotten comfortable with the role. (Statistical expect, that is the statistically expected performance of CEO's at the role vs the statistically expected performance of typical current employee, would still be lots of overlap)
The following study shows this connection for low skilled job. It also shows that the connection has to do with IQ correlating with better understanding of the role, so wont show until after the worker has learned it, but the connection is still there so you'd expect the CEO to learn the role better than an average employee.
That article concludes that it's very risky to use IQ tests to measure just about anything because there are heaps of weak data around them
> As others have pointed out, statistical corrections are no magical compensation for weak data and that it is risky to reach conclusions about test validities from those currently available (Oswald & McCloy, 2003; Russell & Gilliland, 1995). The only solution is properly conducted primary studies, with larger representative samples, better measures, and so on.
Here's the important bit that basically advises not using IQ tests in the exact way that you're using them:
> Until they are available, investigators should be extremely cautious about disseminating conclusions about IQ test validities, from correlations between IQ and job performance.
CEO is a job title, not a measure of intelligence, or even job performance. There are no shortage of shitty CEOs, just as there are no shortage of shitty performers in just about every possible job.
