DXOMark has completed their review of the Canon PowerShot G7 X. They have come away pretty impressed with the camera and it's very good sensor score, which bested the Sony RX100 III in their tests.
“Although it was Nikon who was first to adopt and popularize the 1-inch sensor format, it was Sony who dominated this format with the RX100 series. Now with Panasonic and Canon adopting the sensor the field is opening up. The G7 X has high-speed lens with widest range that sets it apart from the RX100 series but if the 24-70mm lens on the RX100 III is enough the Sony is the better specified of the two but then that’s reflected in the steeper price.”