Can you spot the camera SENSOR SIZE from the shot? Full frame vs M4/3 HD

Here is a quick fun test, see if you can spot which of these cameras has a FULL FRAME sensor, and which has a tiny M4/3 sensor. (crop sensor) What difference does the sensor size make? Cameras featured are the Sony a7s and the Panasonic GH4 Both fitted with a Canon EF 50mm lens at f1.8 throughout. Both with the same WB, same distance, same f-stop, same ISO (200) only the shutter speed varies in order to achieve similar exposure. Note - the gh4 is using a metabones XL speedbooter for EF mount.