When I first joined IBM research right out of school I thought that everyone would be some Einstein and I would be blown away. And at first I was, with everyone talking acronyms and things that just flew over my head. But over time, I realised the place was run by only a few truly smart people and the rest were just regular 9-5'rs. Don't ever compare yourself to anyone. Another memory: I played pro tennis years ago and I would watch some player and think "OMG, this guy is amazing", but I never knew that this guy was probably looking at me and saying the same things. I learned not to care about appearances or be intimidated by someone off court. I learned that the only thing that matters is when I'm on the court, playing against him and trying to kick his ass. Nothing else mattered.
And jumping ship is not the answer. My mother said a great thing: "when you move, you take yourself with you". If you have deluded thoughts and rely on external validation, then why do you think moving will solve this?