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

In the Alcohol average daily consumption rating Brunei holds position #154 2016 out of 189 and Sri Lanka is #87 out of 189 2016.
Position of Brunei is better 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 Brunei 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.
    Brunei 'Both sexes' value is 2.8
    Sri Lanka 'Both sexes' value is 32.2