Statement:
An average person in Saint Lucia drinks more alcohol than in Barbados

In the Alcohol average daily consumption rating Saint Lucia holds position #43 ²⁰¹⁶ out of 189 and Barbados is #47 out of 189 ²⁰¹⁶.
Position of Saint Lucia is worse than position of Barbados.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Saint Lucia and Barbados, 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.

   Barbados	'Both sexes' value is	41.1
   Saint Lucia	'Both sexes' value is	42.8