This article/site appears to be down. Cannot help but wonder if it wouldn't be if they had used CloudFlare...
Jokes aside, I never really expected that CloudFlare would increase the speed of your average site. I mean there is limited caching going on but in general that isn't the benefit of a CDN.
The benefit of a CDN is: consistent speed across geographical zones (Europe, Americas, Asia, Russia, etc), better handling of load variations (Slashdotted, etc), and also some level of DDOS protection (just due to the virtue of more availability).
Any increase in speed supplied by CloudFlare depends a great deal on how the underlying site delivers content and how well cache-control is done. For example if you move all of your static content onto a static host (e.g. static.example.com) and then set the cache to a week, then CloudFlare is going to do a lot more for you, then if your app supplies most content dynamic with no-cache set.
CDN doesn't help at all, if it is based on caching only (like CloudFlare). In some cases http headers prevent all benefits of having cdn. Like pages with no-store, no-cache, post&precheck=0. In these cases CDN might only add latency.
I have seen sites hosting images with those headers too. (like Google sites). If you're using slower network connection it becames painfully apparent that all images are always completely redownloaded. With these parameters images must be downloaded from the source, or otherwise caching cdn would break things. Other cdn networks like coral cache clearly states that they always cache content, what ever headers say... But it isn't acceptable for all sites.
Jokes aside, I never really expected that CloudFlare would increase the speed of your average site. I mean there is limited caching going on but in general that isn't the benefit of a CDN.
The benefit of a CDN is: consistent speed across geographical zones (Europe, Americas, Asia, Russia, etc), better handling of load variations (Slashdotted, etc), and also some level of DDOS protection (just due to the virtue of more availability).
Any increase in speed supplied by CloudFlare depends a great deal on how the underlying site delivers content and how well cache-control is done. For example if you move all of your static content onto a static host (e.g. static.example.com) and then set the cache to a week, then CloudFlare is going to do a lot more for you, then if your app supplies most content dynamic with no-cache set.