Statement:
An average person in Tuvalu drinks less alcohol than in Grenada

In the Alcohol average daily consumption rating Tuvalu holds position #115 2016 out of 189 and Grenada is #51 out of 189 2016.
Position of Tuvalu is better than position of Grenada.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Tuvalu and Grenada, 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.
    Grenada 'Both sexes' value is 40.4
    Tuvalu 'Both sexes' value is 25.9