For a start, newer versions of IPFS work much better, but the network still had a significant amount of older nodes making the experience worse for everyone. Luckily, this is changing as of late, it seems.
IPFS shines when it can take advantage of content proximity (i.e. in your LAN, in your node etc.) or when there are few providers for the content within reach, at which point it just works regardless of connectivity to the outside world.
In a general scenario, comparing IPFS-delivery speed with a CDN-backed website is not very fair. Might be slower but offers much more versatility.
For a start, newer versions of IPFS work much better, but the network still had a significant amount of older nodes making the experience worse for everyone. Luckily, this is changing as of late, it seems.
IPFS shines when it can take advantage of content proximity (i.e. in your LAN, in your node etc.) or when there are few providers for the content within reach, at which point it just works regardless of connectivity to the outside world.
In a general scenario, comparing IPFS-delivery speed with a CDN-backed website is not very fair. Might be slower but offers much more versatility.