Statement:
The level of criminal activities is lower in US Virgin Islands than in South Africa

In the The Most Criminal Countries rating US Virgin Islands holds position #23 2022 out of 139 and South Africa is #4 out of 139 2022.
Position of US Virgin Islands is better than position of South Africa.
South Africa 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 US Virgin Islands

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    South Africa 'Crime Index' value is 75.37
    US Virgin Islands 'Crime Index' value is 61.24