Statement:
An average person in Tonga drinks less alcohol than in Afghanistan

In the Alcohol average daily consumption rating Tonga holds position #121 ²⁰¹⁶ out of 189 and Afghanistan is #4 out of 189 ²⁰¹⁶.
Position of Tonga is better than position of Afghanistan.
Afghanistan is leader of the "Alcohol average daily consumption" rating. So people in Afghanistan are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Tonga

Referencies:

1. Alcohol average daily consumption ²⁰¹⁶ by WHO

   The countries in the rating sorted by 'Both sexes' in descending order.

   Afghanistan	'Both sexes' value is	72.4
   Tonga	'Both sexes' value is	23.1