Human driving has basically capped out at its potential to improve. It may even be starting to get worse...
Automated driving, has barely begun and even if it is less safe today, it will clearly be much safer than human driving soon. And will only continue to get safer and safer as the technology improves.
Do you we need to be so micro-focused as to have an exact day/model/release where autopilot is safer than human drivers?
I for one have been hit by a drunk driver. My wife was in an accident where the other driver was ACTIVELY playing candy crush. We can all see that automated driving will make the roads a safer, better place even if that takes 20 years.