Statement:
An average person in Iran drinks more alcohol than in China

In the Alcohol average daily consumption rating Iran holds position #9 2016 out of 189 and China is #106 out of 189 2016.
Position of Iran is worse than position of China.
Iran is leader of the "Alcohol average daily consumption" rating. So people in Iran are more likely to experience problems related to the consumption of alcohol in social, healthcare, and economical areas, compared to China

Referencies:

  1. Alcohol average daily consumption 2016 by WHO
    The countries in the rating sorted by 'Both sexes' in descending order.
    China 'Both sexes' value is 27.9
    Iran 'Both sexes' value is 61.4