"The economy of scale and efficiency of our data centers allows Google Compute Engine to give you 50% more compute for your money than with other leading cloud

"The economy of scale and efficiency of our data centers allows Google Compute Engine to give you 50% more compute for your money than with other leading cloud providers." http://googleenterprise.blogspot.com/2012/06/google-compute-engine-computing-without.html http://googleenterprise.blogspot.com/2012/06/google-compute-... I wonder how cost efficient the instances are vs. EC2.