What are the differences between Asperger's Disorder and 'High Functioning' (i.e. IQ > 70) Autism?

It is believed that in Asperger's Disorder

• onset is usually later
• outcome is usually more positive
• social and communication deficits are less severe
• circumscribed interests are more prominent
• verbal IQ is usually higher than performance IQ (in autism, the case is usually the reverse)
• clumsiness is more frequently seen
• family history is more frequently positive
• neurological disorders are less common