Statement:
An average person in Japan drinks less alcohol than in Finland

In the Alcohol average daily consumption rating Japan holds position #97 2016 out of 189 and Finland is #89 out of 189 2016.
Position of Japan is better than position of Finland.
Both countries holds average positions in the "Alcohol average daily consumption" rating. So Both sexes is an average for both Japan and Finland, 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.
    Finland 'Both sexes' value is 31.9
    Japan 'Both sexes' value is 30.4