It goes without questioning that extroverts are better at selling than introverts. Extroverts have a gift for the gab, know how to engage clients and even persuading them into make a buying decision. They're great talkers and great closers. Introverts on the other hand are too timid, don't speak up much and they let the client control the conversation. They're great listeners but not great closers. Introverts are good at listening and but fall short on communicating value to client. Extroverts are engaging and communicate value but fall short on listening skills. Ambiverts apparently have the best of both extremes.