Cockroach Labs:2018 cloud report-AWS offered 40% greater throughput than GCP [pdf]

As per Cockroach 2018 benchmarks AWS offered 40% greater throughput than GCP, that too at a significantly lower cost. In their benchmark Price per tpmC for AWS was $0.02 compared to $0.05 for GCP.

Posting this as general opinion seems to be that GCP generally provides better performance than AWS. Looks like things are changing with new AWS instance types and improved AWS Nitro System.