It’s hard to see without clicking through to the full-resolution version, but they do describe Chinese as a “macrolanguage”, and give figures (aggregate, not split by country) for the major Chinese languages.
However, this contrasts with their treatment of Urdu and Hindi as different languages, rather than as two standardised registers of Hindustani. I guess politics is the key criterion for distinguishing languages from dialects.
I hadn’t realised there were five times as many Urdu speakers in India as there are in Pakistan.
