Statement:
The level of criminal activities is higher in Papua New Guinea than in Oman

In the The Most Criminal Countries rating Papua New Guinea holds position #2 ²⁰²² out of 139 and Oman is #133 out of 139 ²⁰²².
Position of Papua New Guinea is worse than position of Oman.
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 Oman

Referencies:

1. The Most Criminal Countries ²⁰²² by Numbeo

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

   Oman	'Crime Index' value is	19.72
   Papua New Guinea	'Crime Index' value is	80.26