Why does Clay return fewer people than LinkedIn Sales Navigator?

Hey Everyone. I'm new to clay and trying to learn as fast as I can. When I do a PEOPLE search in CLAY in provides WAY FEWER results than similar searches on LinkedIn sales navigator. Example: Job: Owners, Founders, Co-Owners, Co-Founders, CEO, Managing Director Company: Headcount 11-50 Location: United Kingdom LiSN shows 220K results Clay shows 13K results Does anyone know why the results are so massively different? Thanks 🙂