How I struggle with these terms!
By definition, Aspergers Syndrome is a disability. It is recognised as such by government, schools, medical and health professionals. And yet, many individuals with Aspergers will say they do not feel disabled, and do not wish to be treated as such.
At the risk of sounding naff, I prefer the terms diff-order, and diff-ability, to describe the unique profile of skills, attributes, strengths and weaknesses that define the different wiring of the Aspie brain.
As my son puts it, "a circuit doesn't work without positive and negative".