My brother has 4 kids, the 3 boys are all on the high end of the autism spectrum. If your son is on the spectrum then he is, simple as that. Your diagnosis is just making it more difficult for you to adapt to him it does not make it any harder for him. A child on the spectrum (depending on their level) have their own way of perceiving the world. Even the best scientific minds in the world cant even fully understand autism yet. It is most definitely not about how much learning you have done. All kids, autistic or not, at some point will be smarter than their parents and get frustrated. Although my brother's boys are all more or less on the same numeric level of autism they are all very different in the things they like and don't like. The important thing is that you take note about what his passion (obsession) is, that is then what you focus on and you can also shape his learning and social interaction around that.

I am making these comment however without knowing his diagnosis, age. Only based on dealing with children with Asperger's and autism on a personal and to some extent professional basis (mostly based on my observations living with my brother and his boys for more than 6 months).

The best of luck to you because I have seen first hand how bloody hard it can be for the parents (in my eyes the forgotten heroes)