They're targeting different segments on different business requirements. Their numbers will never be comparable.
"The deal would have been unthinkable just two years ago,
when Rackspace and AWS were fierce rivals. But in early 2014,
Rackspace, facing ever slimmer margins amid a cloud-computing price war,
withdrew from head-to-head competition with Amazon. Since then,
it has focused on offering higher-margin services."
[0] http://www.wsj.com/articles/rackspace-teams-up-with-amazon-1...RAX's going private to shift its P&S mix and turn things around.
edit: I'll also point to jsode's great comment above.
[0] https://support.rackspace.com/how-to/mapping-of-amazon-web-s...
[1] http://www.networkworld.com/article/2461361/iaas/rackspace-b...
It was more similar to DigitalOcean or Vultr, who are not really IaaS but VPS providers. I mean, where are the VPCs? the incredibly redundant load balancing? the VPN gateways, etc?
Disclaimer: It has been 2 years since I evaluated RAX's offerings.
Shouldn't your cloud based application manage itself? That's kind of the point, not having to 'manage' it?