1. The article mentions that the average freight train speed is ~28 miles per hour. From what I can find, the average freight train speed in the US is ~26 miles per hour. I’m not sure that these numbers are actually apples-vs-apples though.
2. From what I can see on that map, it looks like Moscow is the central hub for freight rail regardless of which China-Europe route you take. Smart move by Russia. Chicago is kind of the North American equivalent and it has really benefited Chicago quite a lot.