Statement:
An average person in Zambia drinks more alcohol than in Sri Lanka

In the Alcohol average daily consumption rating Zambia holds position #57 2016 out of 189 and Sri Lanka is #87 out of 189 2016.
Position of Zambia is worse than position of Sri Lanka.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Zambia and Sri Lanka, 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.
    Sri Lanka 'Both sexes' value is 32.2
    Zambia 'Both sexes' value is 38.3