There is more delivered work than appears here. A project only goes on this page when two things are true: it is live and can be opened right now, and the client has said yes to being named. A logo wall nobody gave permission for is not proof, it is a risk taken with somebody else's business.
There is also no percentage on this page. No conversion lift, no traffic increase, no satisfaction score. Those numbers get quoted everywhere in this industry and almost none of them were measured. If a number appears here later, it will be because it was measured, and it will say how.
If you want to see something closer to your own situation before you decide, ask on WhatsApp. Work that cannot be published can usually still be shown privately.