The short and to-the-point version of the post went to the Rails-core mailing list. On my blog, I prefer to tell stories.

Bragging about how fast you can serve a request is really meaningless when there's no way to know what's involved in that request. On my personal side projects (also using Rails), I serve requests in a couple milliseconds too. But, there's a vast, vast difference in what those sites do, vs what's involved in running a large-scale e-commerce operation.