If I understand correctly, this is not "worldwide internet usage", but actually "page views", which I think is a fairly important distinction to make (at least for the people of HN I would imagine). I would personally be more interested in a breakdown by protocols, volume, automated vs human, etc. Though I guess this company, dealing with web analytics, would be unable to present such information.
As an aside, I'm also curious whether a lot of these page views are triggered by ads, since I would imagine adblockers are not nearly as ubuquitous on mobile as they are on desktop.