In the past it was said that Borderline Personality Disorder was the female version of Antisocial Personality Disorder(Sociopath). There are indeed many similarities between the two such as: difficulties with relationships, tendencies to blame others, impulsivity, aggression, and at many times manipulative tendencies. Today though it is understood that there is a difference between the two.
Although Antisocial Personality Disorder and Borderline Personality Disorder are both characterized by manipulative behavior, sociopaths or people with Antisocial Personality Disorder are manipulative to gain profit, power, or some other material gratification, whereas BP's or people with Borderline Personality Disorder motivation is geared more towards gaining the concern of caretakers. Borderlines also feel shame, guilt, emotional distress, and emptiness; people with Antisocial Personality Disorder generally do not. So though at first glance they may appear to be the same, they are very different.