Statement:
An average person in Sri Lanka drinks less alcohol than in Bulgaria

In the Alcohol average daily consumption rating Sri Lanka holds position #87 2016 out of 189 and Bulgaria is #45 out of 189 2016.
Position of Sri Lanka is better than position of Bulgaria.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Sri Lanka and Bulgaria, 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.
    Bulgaria 'Both sexes' value is 41.5
    Sri Lanka 'Both sexes' value is 32.2