Amazon CDNs

http://aws.typepad.com/aws/2013/10/amazon-cloudfront-content-uploads-post-put-other-methods.html

I know just enough to be ..."half-dangerous"! So feel free to contribute to the community and my 'limited' knowledge.

As I understand it, most of the popular CDN's just speed up the static parts of our WordPress site(s), correct?

So now, according to this article, Amazon's going to speed up a lot of the php requests as well, right?

Doesn't this new feature pretty much leave the other CDN's in the dust?