It is a disability.
Sure, Aspergers is usual beneficial to techies from a performance perspective, but it can be a massive disadvantage when dealing with people within an organisation.
I used to work for a local authority in an sysadmin position and it was very fortunate that HR understood Aspergers, or my lack of social awareness would have got me sacked a few times.
The upside of having Aspergers is only part of the story.