Well AWS is slow is not surprise, there was an article on HN in last couple of weeks that pitted Azure against AWS and AWS was faster hands down. So this is no surprise at least to me.
Many argue that the AWS ecosystem (25 services at last count) and the extensive featureset of AWS outweigh the bare bones "fast" metrics of other providers.
I think like the poster above is mentioning...there is generally more to it than a simple metric or two sampled a few times from a single endpoint. But I guess it all lies on ones definition of what they consider valuable...