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

In the Alcohol average daily consumption rating Mexico holds position #82 2016 out of 189 and Jamaica is #116 out of 189 2016.
Position of Mexico is worse than position of Jamaica.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Mexico and Jamaica, 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.
    Jamaica 'Both sexes' value is 25.8
    Mexico 'Both sexes' value is 33.1