Statement:
The level of criminal activities is higher in Australia than in Japan

In the The Most Criminal Countries rating Australia holds position #76 2022 out of 139 and Japan is #129 out of 139 2022.
Position of Australia is worse than position of Japan.
Japan 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 Australia

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Australia 'Crime Index' value is 44.83
    Japan 'Crime Index' value is 22.24