I'm in London and I get 80ms average, 100ms jitter on the UKs fastest broadband but again
azurespeed.com isn't xCloud this is just pinging Azure data centres and getting a rtt. To measure input latency for xcloud you need input to pixel latency tests with a high speed cam. You need to measure the time it takes between a button press and the corresponding movement on your display. It isn't a simple matter of measuring ping. My 175ms isn't some preposterous number, it's relatively normal:
Suggesting it's 32ms based on your azurespeed.com ping times is though.