Statement:
The level of criminal activities is lower in North Korea than in Papua New Guinea

In the The Most Criminal Countries rating North Korea holds position #28 ²⁰²² out of 139 and Papua New Guinea is #2 out of 139 ²⁰²².
Position of North Korea is better than position of Papua New Guinea.
Papua New Guinea is leader of the "The Most Criminal Countries" rating. So it is wise to avoid visiting the country or, at least, you need to take additional actions to protect your life and belongings, compared to North Korea

Referencies:

1. The Most Criminal Countries ²⁰²² by Numbeo

   The countries in the rating sorted by 'Crime Index' in descending order.

   North Korea	'Crime Index' value is	58.07
   Papua New Guinea	'Crime Index' value is	80.26