Statement:
An average person in Mexico drinks more alcohol than in Guatemala

In the Alcohol average daily consumption rating Mexico holds position #82 ²⁰¹⁶ out of 189 and Guatemala is #132 out of 189 ²⁰¹⁶.
Position of Mexico is worse than position of Guatemala.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Mexico and Guatemala, 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.

   Guatemala	'Both sexes' value is	19.4
   Mexico	'Both sexes' value is	33.1