As I understood it, they are measuring the latency to game servers located in googles datacenter. This is why they are talking about that. They cant measure gam

As I understood it, they are measuring the latency to game servers located in googles datacenter. This is why they are talking about that. They cant measure game latency to a PoP, because the game server isn't at the PoP. Instead of routing to the nearest PoP, they route to the PoP that provides the lowest latency to their game server. I don't understand the confusion. They are simply measuring latency over a number of different routes and choosing the optimal one (for their use case). Maybe you are assuming that there is no latency between the PoPs and the datacentres? I can assure you thats not the case.