I don't have stats, but my personal feeling is that car safety features trump full self driving.
Eg, you are actively driving (which ensures you are engaged and dont fall asleep, etc), but if the car sees something it can react (drifting out of lane, car slows down ahead of you, person walks in road, etc).
That seems so much safer in my opinion.
(That works for driving around town, ofc I think adaptive cruise control + the above safety features is safe for highways, etc)