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

In the The Most Criminal Countries rating Singapore holds position #114 2022 out of 139 and Japan is #129 out of 139 2022.
Position of Singapore 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 Singapore

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Japan 'Crime Index' value is 22.24
    Singapore 'Crime Index' value is 27.22