In my opinion this is comparing apples to oranges.
CloudFlare emphasizes the security side (anti-DDoS, WAF) while CloudFront goes for the pure CDN side of things. I would compare CloudFlare to e.g. InCapsula and CloudFront to Rackspace Cloud Files / Akamai.
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[ 3.1 ms ] story [ 13.0 ms ] threadCloudFlare emphasizes the security side (anti-DDoS, WAF) while CloudFront goes for the pure CDN side of things. I would compare CloudFlare to e.g. InCapsula and CloudFront to Rackspace Cloud Files / Akamai.