Statement:
An average person in Niger drinks less alcohol than in South Africa

In the Alcohol average daily consumption rating Niger holds position #151 2016 out of 189 and South Africa is #6 out of 189 2016.
Position of Niger is better than position of South Africa.
South Africa is leader of the "Alcohol average daily consumption" rating. So people in South Africa are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to Niger

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    Niger 'Both sexes' value is 5.4
    South Africa 'Both sexes' value is 64.6