Edge computing would ensure that latency is the same in all regions: eg. if they could get it down to 30ms somewhere, they could get it to 30ms everywhere (kind

Edge computing would ensure that latency is the same in all regions: eg. if they could get it down to 30ms somewhere, they could get it to 30ms everywhere (kind of, ofc). Your singular case does not really prove much: maybe you are just in the same area their DC is? Still, a full, customized web search result in 200ms (though, first byte is not really indicative of that) would be impressive.