I don't know the answer, but are these numbers comparable? I would assume that Waymo is talking about crashes while in self-driving mode, is that true for Tesla as well or are they just talking about all miles driven, self driving mode and manual?
Autopilot is not FSD, only runs on freeways, and is apparently so bad that Tesla refuses to release statistics that allow for an apples to apples comparison against having it off.
"In its first report on its autonomous vehicle operations in Phoenix, Arizona, Waymo said that it was involved in 18 crashes" (in 6.1 million miles).
For comparison, in the latest Tesla safety report:
"we recorded one crash for every 4.31 million miles driven", which is roughly what they had 2 years ago.
So Tesla is objectively safer. And Teslas are diven anywhere, whereas Waymo only drove in Phoenix, which is extremely sunny and dry.