Just yesterday Quizlet posted a long expose that, in their opinions, shows that GCP is cheaper, more reliable (live migration), more performant than AWS, with details to boot:

https://news.ycombinator.com/item?id=11260137

And last month Spotify did the same thing.

The price differences between EC2 and GCE, especially with Custom VMs, is massive. Up to 40% according to this:

http://www.zdnet.com/article/what-google-says-to-aws-price-c...