Same lens, but the X-10 scores higher in the optics department. Same flash, but the X-10 scores lower in the flash performance department. Worse and more aggressive noise reduction at high ISO, but...
Also, seeing Nikon's and Olympus' offerings in the lower-end of their enthusiast camera offerings, I realize how Canon's S100 is the camera that has aged better in the whole...
There is an optional viewfinder on this one, Samsung is clearly stating this in the specifications sheet. It hasn't been seen yet, but it should be introduced soon to the market.
WiFi can be used to get a remote viewfinder on a cellphone, with touch focus assist and controls. So, in a way, there is touch screen shooting, you only need to use a decently recent smartphone.