400ms must be when you're 5 minutes from falling asleep. Cloudflare said 300-400ms when it's really 100-400ms, effectively lying by 3x. It's not material to their business but still disgusting.
For example:
300ms : https://www.newscientist.com/article/dn28728-memory-recall-w...
200ms : https://www.nature.com/news/2000/001130/full/news001130-3.ht...