Anyone have info about latency for Cloud Run vs aws FireCracker MicroVMs?
By AWS Firecracker microVMs, do you mean AWS Lambda? Cloud Run is a managed service. It wouldn't be a good comparison to compare it to the Firecracker open source project. It would make more sense to compare Cloud Run to AWS Lambda.
While Cloud Run is a managed service, it is built upon Knative as far as I'm aware, so in theory a self-hosted version could be compared to Firecracker. You are correct that a Cloud Run to Lambda comparison would be more 1:1, though.
I read "compute platform" as Cloud Run being the execution engine. Sounds like Google is just using the normal Kubernetes based execution environment.