Well, we already know from ex-Tesla engineers that they designed Autopilot to disengage one second before an anticipated crash, thus rendering a crash as "no on Autopilot."
Like many things Tesla, be skeptical of what they present at face value given their track record.
According to Tesla methodology (hat tip @willow_hiller):
To ensure our statistics are conservative, we count any crash in which Autopilot was deactivated within 5 seconds before impact
(Reposting excerpt to make it more visible)