Human drivers die at a rate of about 1 per 100 million miles driven. Waymo cars have only driven about 2 million miles, as I recall. Therefore, as it stands today, there is nowhere near enough public evidence to confidently believe that Waymo cars are less deadly than human drivers. Especially considering that much of that driving has taken place in meticulously mapped areas with good roads in daylight hours.

Personally, I would trust a human driver over a Waymo car until strong statistical evidence shows that Waymo cars are safe in a wide range of conditions.