Both Fujifilm X-H2S and Fujifilm X-Pro3 have APS-C sized 26.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Another similarity between these two cameras is that both Fujifilm X-Pro3 and Fujifilm X-H2S sensors lack anti-alias (Low-Pass) filters. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moiré occurring in certain scenes.
Below you can see the X-H2S and X-Pro3 sensor size comparison.
Sensor Size and Resolution Comparison image of Fujifilm X-H2S and Fujifilm X-Pro3 Cameras
Fujifilm X-H2S and Fujifilm X-Pro3 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Fujifilm X-H2S
or the
Fujifilm X-Pro3 ,
including hyperfocal distance.