Compare your experience and knowledge to your examiners and you might feel pretty small. They’ve had longer to see more, learn more, do more and know more. A candidate could easily worry as a result.
But more is not the same as better. Yes, your examiners know more in general, but you know more specifically. They could have a better view of the big picture, but you have a clearer perspective of your research.
Remember: your examiners have read your thesis, but you made it.