Statement:
The level of criminal activities is lower in Taiwan than in Japan

In the The Most Criminal Countries rating Taiwan holds position #134 2022 out of 139 and Japan is #129 out of 139 2022.
Position of Taiwan is better than position of Japan.
Both countries are outsiders of the "The Most Criminal Countries" rating. So in most cases, you can feel safe and unlikely will face a criminal, compared to most countries of the World.

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
    Taiwan 'Crime Index' value is 16.15