Statement:
An average person in Eritrea drinks less alcohol than in Serbia

In the Alcohol average daily consumption rating Eritrea holds position #140 ²⁰¹⁶ out of 189 and Serbia is #52 out of 189 ²⁰¹⁶.
Position of Eritrea is better than position of Serbia.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Eritrea and Serbia, 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.

   Eritrea	'Both sexes' value is	13.5
   Serbia	'Both sexes' value is	39.9