Statement:
The level of criminal activities is lower in Oman than in Brunei

In the The Most Criminal Countries rating Oman holds position #133 2022 out of 139 and Brunei is #111 out of 139 2022.
Position of Oman is better than position of Brunei.
Oman is an outsider of the "The Most Criminal Countries" rating. So in most cases, you can feel safe and unlikely will face a criminal, compared to Brunei

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Brunei 'Crime Index' value is 29.55
    Oman 'Crime Index' value is 19.72