Do they test full rendering time or only RTT? Also it would be useful to know IP addresses from which test request are being made. Tested a site hosted in Hetzner and got 135ms latency from Frankfurt which is unexpectedly high. Ping RTT from some US east networks to this site is around 120-150ms, how it shows the same latency within DE?
The response time for Bitbucket for example is:
100ms from us-east
300ms from us-west
400ms from eu-central
600ms from tokyo
800ms from sydney
(numbers from OnlineOrNot)