The title is trying to imply that airbnbs outnumber apartments, but directly comparing airbnb listings with apartment listings doesn't really make sense. There's basically a one to one relationship between an airbnb listing and an apartment that's used for airbnb. On the other hand for every apartment listing there might be tens/hundreds of apartments being used as apartments (because an apartment that's occupied tends not to be listed). In a tight rental market, each apartment gets snatched up sooner, which exacerbates this. A far more honest representation would say how much housing units are in NY, and how much % of that are being used for short term rentals (eg. airbnb), but that gets you a mundane number (eg. 10%) rather than a shocking headline.