Choosing a cloud provider is about more than just performance. For me, I lean towards GCP because of the combination of awesome UX, custom VM configurations (which also means GPUs attached to a custom # CPUs), no-bidding spot instances, and the multi-regional cloud storage offering that replicates data across many regions for much cheaper than AWS.

I wrote about this last year if you're curious: https://medium.com/@robaboukhalil/a-tale-of-two-clouds-amazo...