How many strangers' lives is a loved one's life worth? If your answer is anything other than "1", how does that square with other people having their own loved ones, and your loved ones being strangers to them?
Don't understand your point. Everyone's life is important, which is why I said: the expectation is that in each individual injury accident a human clearly could not have handled the situation any better. It is insufficient for self-driving cars to be as safe as, or even slightly better than human drivers. Which is why, better-than-human sensors are needed.
I'm saying that the only way "slightly better than human drivers" wouldn't be good enough is if some people's lives are worth more than others'.