Pimp has confirmed via Twitter that the viewership numbers shown on Facebook do not include all the numbers. They exclude viewers who are not logged in or are watching via embedded streams. The ESL Facebook deal has been one of the most controversial topic in the recent weeks.
To those wondering about the viewer numbers on facebook. Worth to mention that it only counts logged in users watching on facebook. Whoever uses HLTV, or other sites player-bars, or simply watching with out being logged in, is not in the chart #ESLProLeague
— Jacob Winneche (@Pimp_CSGO) February 14, 2018