I don't think the comparison is equal.<p>You are comparing PAAS to IAAS, but AWS does have Elastic Beanstalk which would be a more direct comparison e.g. PAAS. Like App Engine, Elastic Beanstalk handles the auto scaling without having to setup and understand all the details around EC2.
<i>Personal note: I found the GAE quotas don't even count the static requests (static HTML + CSS). So this site should never cost me anything.</i><p>And there are five free SNI slots, too, right? So... you can host a static site available over ssl completely for free on GAE?