Based on the specs, X100S wins and in term of control and handling i believe that Fuji has did a better job. Another big minus point for Coolpix A is that it does not have a build-in Optical/Electronic viewfinder and buying a seperate piece would cost another hundreds of dollor. I believe however Nikon is capable of producing good and fast camera.
Thanks for the images so far... they do look pretty impressive. Keep them coming for us slow adaptors - to jump in or to compare with the competing models, eg coolpix A.