(Obligatory "I'm not a doctor just reasonably intelligent person on the internet" statement.)

I think the difference between Asperger's and ASPD is that Asperger's people might genuinely want to connect but cannot get the hang of socializing, while people with ASPD have no genuine desire to connect most of the time. People with ASPD can have magnetic personalities, but their motivations in communication are in swaying people to their own wills instead of connecting with them. They might not see the needs of other people as something they have to attend to at all. People with Asperger's, on the other hand, might understand that other people have needs but have a hard time understanding those needs, and therefore won't understand how to help them fulfill their needs.

If your dad is really, honestly clueless about your emotional needs and other people's emotional needs, he may have Asperger's. If he is aware of those needs and does not see any obligation on his part to show you or anyone else any regard or warmth in light of that awareness, or if he regards you and everyone else as weak or lesser for having emotional needs, he likely has ASPD. My dad had a bit of both, and yours might be the same way.

I am admittedly self-diagnosing out the (bleep) when I say I probably have a bit of both, but I'm high-functioning enough that I never went to the head doctor for this stuff...