Statement:
An average person in Guinea-Bissau drinks less alcohol than in Sierra Leone

In the Alcohol average daily consumption rating Guinea-Bissau holds position #67 2016 out of 189 and Sierra Leone is #53 out of 189 2016.
Position of Guinea-Bissau is better than position of Sierra Leone.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Guinea-Bissau and Sierra Leone, 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.
    Guinea-Bissau 'Both sexes' value is 35.6
    Sierra Leone 'Both sexes' value is 39.5