Well, can it? To answer this question one has to keep in mind that a disability is a pre-defined set of physical and/or behavioral characteristics that are devalued on a societal level. Disability is a social construction, which stands in contrast to a person's impairment, which is the biological reduction in the ability to functiontion in a specific way. Both have social implications, being that an impairment probably would not exist if there were no roadblocks in how a specific culture expects you to live, but with disability, there is a specific definition placed on you that you have a disease, that you are sick, that you need to be fixed or cured in some manner. WIth a disability you are not normal. That is what society says to the disabled indvidual. Society calls the disabled less than fully human.
So, if we consider disability to be the social oppression that society places on the individual, can there be a disability that is more severe than another? Yes, depending on the time and place. If disabiliy is the opression that society places on the individual, thn that oppression can be felt more by a specific person at a specific time and place. For example, if a non-verbal Autie is able to hold a job and pay his bills, and a very verbal Aspie is not, due to the fact that he is not able to get through the interview process and interpret how much eye contact he is giving someone, that the Autie is less disabled than the Aspie. If a quadriplegic is being treated with respect as an adult and a paraplegic is being talked to like he is five and/or incompetant, than the quadriplegic is less disabled than the paraplegic. The severity of disability in my mind is relative to the moment. What society considers more severe recieves a stronger medical definition. Keeping this in mind, why would a person want to claim disability as a positive part of who you are?
The answer to this lies first in the aceptance of your impairment as a positive aspect of who you are, being that impairments interact with the dominant social structure and elicit reactions that effect your preceptions of reality. The acceptance of disability lies in your relationship to the opression that society has for you and the reclaiming of it for yourself, like the queer community has in appropriating theword queer as a banner of pride. We can take the flack that society gives us and grow with it as individuals, and we can develop ideas together in the arts we produce (dance, paitings, music, etc.) as a means of cultural expression, expressing solidarity in our common restrictions imposed by the AMERIKAN superstructure.