Doesn't it depend on how you define "autism"? Because nowadays, with the way the DSM-IV defines it, Autistic Disorder and Asperger's Disorder both fall under the heading of Pervasive Developmental Disorder... meaning that an Aspie would technically be a person with a PDD, and not autism, because autism (as well as Asperger's) is a specific sort of PDD.
That said, if you refer to PDDs as "the autism spectrum", then yes, Aspies are autistic. Just higher-functioning, with more language. Considering that there are NTs with autistic traits, we could be considered "auties with NT traits"....