Ehsan, this is a good article. I have read the report you refer to in detail. Im not surprised at the listing. I looked at the rankings. I was struck by the inverse relationship between ranking and country size.
It is relatively easy to manage logistics in smaller, highly concentrated population centers than in regions with vast intermodal
distances to cover to reach populations. I don't think thats a liability as much as it represents an increased number of times and ways to touch and manipulate the freight.

In the US, one company may choose to hold and receive product at a warehouse near the port or near a maquilladora facility on the southern border (like Dell), while another may choose to distribute from a middle of the country location (like Williams Sonoma in Memphis). As you might imagine, that same situation applies in China domestically, albeit the infrastructure may not be as mature in China.

US is 14 and China is 30. I think those are fair rankings with the China ranking being pretty impressive actually.