Statement:
An average person in South Korea drinks more alcohol than in Tonga

In the Alcohol average daily consumption rating South Korea holds position #71 ²⁰¹⁶ out of 189 and Tonga is #121 out of 189 ²⁰¹⁶.
Position of South Korea is worse than position of Tonga.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both South Korea and Tonga, 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.

   South Korea	'Both sexes' value is	34.6
   Tonga	'Both sexes' value is	23.1