Both Samsung WB150F and Samsung WB700 have 1/2.3-inch sized 14.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the WB150F and WB700 sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung WB150F and Samsung WB700 Cameras
Samsung WB150F and Samsung WB700 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the 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
Samsung WB150F
or the
Samsung WB700 ,
including hyperfocal distance.