Can you please clarify which CDN features are you referring to on your blog (can't find any) or anywhere else? Also can you elaborate what do you even mean by "so well"?
Sia was started to be built before IPFS was even announced and has hosted PBs of data already as a working product. On the other hand IPFS hasn't even released it's public testnet so it would be great to understand your point.
Edit: btw by IPFS I assume you refer to their Sia equivalent product, Filecoin. At least I do, as IPFS cannot be compared to Sia alone.
