Sites say the "top 5% of listing agents sell homes for up to 9% more." Is that real?

A specific performance statistic like that is not something this site can verify as current or accurate for North Metro Atlanta, so it should not set expectations for any single agent. Pricing performance is better measured through an agent's own list-to-sale price ratio on recent, comparable closings, a documented number rather than a marketing claim borrowed from another market. Joel Boss can show that ratio on recent, comparable closings instead of asking you to trust an unsourced claim.