If you specifically select a bunch of successful people and pitch them against a bunch of random people then of course the successful people group will perform

If you specifically select a bunch of successful people and pitch them against a bunch of random people then of course the successful people group will perform better. I'm sure though, that if someone finds a group of successful people (even billionaire level), I can easily find a group of poor/unsuccessful people who will beat them at any specific task. It's no coincidence that people often complain about their boss being an idiot. It's probably true. People don't get into leadership roles because of their talent or intellect - They get lucky; right company, right time.