Both Nikon 1 J5 and Nikon DL24-85 have 1" sized 21.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Another difference between these two cameras is that Nikon 1 J5's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the J5 and DL24-85 sensor size comparison.
Nikon 1 J5 and Nikon DL24-85 sensors have exactly the same size so none of them has any advantage over other in this area.