As was stated elsewhere, most accidents happen in city driving where autopilot cannot be activated so the with/without AI is meaningless. We need to figure out when the AI could have been activated but wasn't, if you do that then you are correct.
On the contrary to your overall point: The fatal crash rate per miles driven is almost 2 times higher in rural areas than urban areas. Urban areas may have more accidents, but the speeds are likely lower (fender benders).
