The study in question appears to only be including ad revenue from Google properties (with some interesting assumptions baked-in) for news related search querie

The study in question appears to only be including ad revenue from Google properties (with some interesting assumptions baked-in) for news related search queries and Google News. I'd imagine that they're ignoring the DoubleClick ad revenue because it's doesn't generate a click bait headline. Google pays no-name publishers 68% of the ad-revenue they get, so I'd imagine for a name brands like NYT news sites capturing a much larger share from the Google ads on their properties.