I voted slight advantage, of course it depends on the factors you are considering and what you feel is important as fas as measuring success in life.
I tend to in life to better then NT peers my age, I always work harder, I always get better grades on average in collage, I was 22 when I became a homeowner, most dont acheive this till their 30's, I have a decent job that many my age are not fortunate enough to have, many still work around town for just over minimum wage. I have excellent budget and anticipation skills so I dont fall behind on bills, I keep doing better and have plans in place in the event something goes wrong. I have much more powers of reflection, memory and understanding of the importance of my time on Earth and what I need to do in life to someday be truly happy.
It is for these reasons I feel, taking into account my weaknesses socally and dealing with people, judgement, that makes it much harder to deal in life, I think as far as I am concerned I have a better shot at being fufilled, happy and sucessful in my own eyes in life then the majority of my NT peers.
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DX'ed with HFA as a child. However this was in 1987 and I am certain had I been DX'ed a few years later I would have been DX'ed with AS instead.