Bob, I'm sure you're right about the soft aspect. They look soft to me, too - particularly the maple one which I think may be out of focus slightly, thanks to being inadvertently on the macro setting when I shot it!
Sharp detail and much better low light capability are the main reasons I am thinking about selling the Leica DLux 4 and buying the Sony RX100 in spite of what I see as less accurate colors from the Sony.