The "incapacity to maintain relationships" is hard to judge. People come and go, are we talking days? months? weeks? years? almost anyone could identify with that one based on their own personal barometer.
ASPD generally indicates a callous disregard for humanity. It's a serious condition. Not just "i have a hard time with people," but more, "fuck all people, they're in my way, and I'll do what I gotta do to clear my path, to achieve my goals, at the cost of anyone and everyone. Screw them, you don't like me? Meet my icepick."
So, yeah.