No, because it is all part of autism spectrum disorder. I've never felt that people who have been labeled Asperger's Syndrome are above those who are labeled autistic disorder. I have friends who are non-verbal and were once considered low functioning. I think low functioning is often a mislabeling--perhaps labels are not always useful--when teachers and caregivers have not taken the time to communicate in the way the person who is non-verbal communicates best. A non-verbal person may be capable of writing a novel or solving high-level math equations, but if everyone around that person ignores all the methods available to communicate, besides tongue-flapping, then that person will be dismissed by society as low functioning.
It may be that the Kanner type autism and the Hans Aspergers diagnoses make more sense merged, instead of creating division between the so-called "betters" and the so-called "less thans". The world is better without so much division.