Why would performance be pareto distributed? Not saying it isn't, just wish we would unpack that idea a bit more. IQ and other personality traits are gaussian,

Why would performance be pareto distributed? Not saying it isn't, just wish we would unpack that idea a bit more. IQ and other personality traits are gaussian, with which I would expect performance to be correlated But, the mythical "10X employee" would seem to imply pareto, along with 80/20 notions of both personnel and an individual employee's day-to-day workload How do we resolve this dichotomy?