FWIW, this is shot on Dec. 25, 2013 using D610@ISO100 and Ai 400/5.6 ED IF@f11 on a Gitzo Series 3 tripod.
The Panasonic images were shot at ISO400 and the lens was stopped down to f8.0. Both were shot handheld.
Examined at 100, the D610 image is obviously more detailed and noise-free shot at the base ISO. Also, the image looks more atmospheric, which I like.
The Panasonic images are inevitably noisier at ISO400 (and due to the smaller format), but the details hold up fairly well and CA is much better controlled.
Also, the GH5 image was perfectly dust-free, whereas I had to remove a couple of dust spots from the D610 image.