In my opinion most of the criteria you listed above may be irrelevant (ie., someone does not have to have difficulty with imaginative play or be clumsy to be diagnosed ASD).

I think the main difference is that which you listed in #4. People with Asperger's Syndrome have trouble interpreting social cues and, unless they are taught, may be unaware of or misinterpret them, whereas people with AvPD are over-aware. Also, people with Asperger's Syndrome generally don't like eye contact because it makes them feel overwhelmed or uncomfortable. People with AvPD will also usually feel this way, but it's because they are self-conscious and are threatened by what the eyes symbolize, not because it feels "unnatural" for them.

Sorry, that's all I can think of off the top of my head. If I think of anymore, I'll post them.