Re: AV's Hindenburg?
Back to the basic comparison of competence then.
You assert that a "comparable human driven vehicle would not" have killed the poor pedestrian.
Humans kill quite a lot of pedestrians every day. There were 6,000 killed in the US alone in 2017, according to Forbes (https://www.forbes.com/sites/tanyamohn/2018/02/28/high-pedestrian-deaths-in-2017-risk-becoming-new-normal-report-finds).
So, your assertion doesn't hold. It's based on the idea that all (human) drivers are competent, which is demonstrably not the case.
What we need are comparisons of fatalities/injuries per mile travelled. Obviously this also varies by country...