The test is worthless unless you focus on what makes a psychopat a psychopat. Having little to no emotions for example is a trait that they have common with ASD, but the big difference is: we have empathy - they DONT.
Sociopaths/Psychopats (Commonly known as an Anti-social disorder) are the only ones that "exist" in the world, and when their world view is threatened, they break - its really pathetic to see them becomming aware of the world. Psychopats are Anti-social, Aspies are A-social,
If you have ever met a psychopath, you'll know. NT people find them emotionally exhausting (hard to work with and emotionally grinding) the way we find NT people exhausting to deal with their social quirks. I actually worked with one for a short while, i could "smell" that there was something very wrong with him.
He was a cold person who was very egocentrical. He was severely disturbed by my lack of social protocol, he didnt know how to handle me because i told him to go and f himself, and i am not certain that an NT person would have the "social-balls" to say what i said.
One good thing about Aspergers is the invisible +32 point armor with immunity to BS 
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"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring" (Carl Sagan)