Statement:
An average person in Guinea drinks less alcohol than in Greece

In the Alcohol average daily consumption rating Guinea holds position #141 ²⁰¹⁶ out of 189 and Greece is #72 out of 189 ²⁰¹⁶.
Position of Guinea is better than position of Greece.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Guinea and Greece, 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.

   Greece	'Both sexes' value is	34.5
   Guinea	'Both sexes' value is	12.5