Below you can see the front-view size comparison of the Hasselblad X1D and Panasonic GX9. The Panasonic GX9 is clearly the smaller of the two cameras. Its body is 26 mm narrower, 26 mm shorter and 24 mm thinner than the Hasselblad X1D.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.