Am I intellectually inferior to those at Oxbridge?

There are so many factors that determine whether or not you're successful in applying to Oxbridge- yes, academic ability and perceived suitability for your chosen subject come into it, and the interviews are rigorous...but that doesn't mean Oxbridge students are necessarily more intelligent. Intelligence is a very mutable, elusive thing and it is certainly not black and white.
So I wouldn't have an identity crisis over a rejection if I were you, nor would I see being accepted to Oxbridge as the academic be all and end all. The whole education system/university application process? Not infallible in any way.

Thank you. My GCSEs are actually better than yours. Not that it matters.

EDIT: I love how some arrogant people, or one person, is negging every positive comment. They must want to stroke their own ego...

No worries. Congratulations to you - what did you get, just out of interest?

It's true though - let me link you some comments from an Oxford tutor - check out the last paragraph especially:

IME, what we tended to be wondering at interview (assuming that the candidate was talented enough and self-motivated enough - that's checked but pretty much assumed) was "how would it be to spend an hour or two hours a week in the company of this person, with one other student, talking about the topic they were sent off to research and write an essay on?"

So we were absolutely looking for independent thought, a preference for learning through conversation rather than having information fed at them to digest and critique alone later, the ability to defend a position and to change their mind mid tack - to think aloud and on the hoof and coherently, and to be a generous conversationalist.

There were people I interviewed who were certainly bright enough but would have been emotionally crucified, in my judgement, by spending an hour or two hours a week in intensive academic discussion with me. Some of those we were able to pass on to colleges where the tutor was the kind of personality which would be nourishing to them.

Some people were so bumptious that the prospect of spending an hour or two hours a week with them was just unbearable. Some of those we were able to pass on to colleges whose tutors enjoy the company of that sort of exuberant confidence.

Some people were very attractive to us, but there simply wasn't room for them, and they fell through the net because, having applied to an oversubscribed college, the places at the less fashionable colleges tended to have been filled by the time they filtered down.

And from my current position, I have to say that those of us at the other Russell group universities are DELIGHTED to pick up the Oxbridge rejects, they tend to have a LOVELY time with us, get good degrees, be good intellectual company, get plenty of intellectual stimulation outside Oxbridge and go on to have happy and successful lives. Especially the ones who shrink into their shells at interview - because the lecture plus careful pastoral attention model often suits them to a tee and they blossom and flourish into splendid splendid intellects.’

And yet your the one who just had to mention the fact that his GCSES were better than the other persons

That's a little unfair. I have Asperger's Syndrome and don't fair well in conversations with people I am unfamiliar with. I hope I am not disadvantaged due to my neuroanatomy...

Hmm. That's unfortunate, but is it, though? Oxford and Cambridge education is predicated on a tutorial system, and if you don't work well in that kind of conversational environment, is it going to be the best place for you? If you're going to be approaching every tutorial with trepidation because of Aspergers, it may be better for your happiness to be in a more lecture-based system. Just a thought.

I didn't have to. It just makes me feel slightly less worthless knowing that those who have got into top universities didn't perform as well as I did.

Not necessarily. Obviously there's a higher chance than picking someone from the general population, but not a guarantee by any means. I interviewed for Oxford and was rejected. Now, that could be because I was going for the wrong subject (which I do genuinely believe played a part), didn't go to a private school (which I don't) or was academically inferior to my peers, but in actuality it was because I came across badly at interview. The ability to interview, certainly in my case, was linked to confidence, which I didn't have much of at the time so I got nervous and messed up. So if anything I think for me it probably shows that I should have gone for a different subject (having studied for a year, I now know this was the case) and lacked confidence compared to others.

You shouldn't ever feel worthless

I can't forfeit a chance to study at such a prestigious establishment due to some syndrome I may have. I will perservere in improving my conversational skills, as I can be quite fluent when discussing my academic interests. I just hate small talk, it is such a waste of time. Also, my happiness is certainly not my priority; education and learning are all that matter to me.

Well, I appreciate your spirit but do remember it's not the only prestigious establishment there is. I totally agree with your decision to improve your interview skills and advise practicing discussing your subject with people at every opportunity.

Don't underestimate your happiness though; it's not to be undervalued.