Statement:
An average person in Japan drinks the same amount of alcohol as in The Gambia

In the Alcohol average daily consumption rating Japan holds position #97 2016 out of 189 and The Gambia is #97 out of 189 2016.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Japan and The Gambia, compared to most countries of the World.

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    The Gambia 'Both sexes' value is 30.4
    Japan 'Both sexes' value is 30.4