Since Tesla works really hard to hide who is responsible in case of an Autopilot crash, witholds and deletes information as well as deny any responsibility anyways, being just as good as a human driver isn't nearly enough.

Additionally, there's no data because Tesla releases nothing except heavily doctored numbers meant to make them look good. (To Tesla, a crash means airbag deployed. Sorry, random person that got ran over and killed, but you're out of Tesla's statistics)

You can count on Tesla for one thing, and that is to lie.