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

In the Alcohol average daily consumption rating Nigeria holds position #21 2016 out of 189 and Sri Lanka is #87 out of 189 2016.
Position of Nigeria is worse than position of Sri Lanka.
Nigeria is leader of the "Alcohol average daily consumption" rating. So people in Nigeria are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Sri Lanka

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    Nigeria 'Both sexes' value is 55.0
    Sri Lanka 'Both sexes' value is 32.2