ability to do bokeh

Bokeh is the blur in photos, more bokeh with more shallow depth of field, DOF. You get this best with:

-a DSLR with a fullframe sensor is better than a cropped sensor, for the sake of bokeh, it allows you to get closer

-a fast lens (low aperture value, as in f1.4 is better than f5.6), the higher the focal length the better (high mm value, as in 85mm is better than 28mm

-getting closer to your subject, less distance

-editing software, artificial bokeh

Neither really but the larger the sensor the easier it is to get a narrow depth of feild. So the choice between these two is the Fuji.

Take the X-S1. It is very capable of doing bokeh.