Weight: The Nikon with the 24-70 weights 2360 gram while the Fuji with the 90mm is only 1545 gram.
Resolution: The Fuji gives 50 MP while the Nikon is only 16,2 Mp.
Transportation: The Nikon has the unergonomic fixation at both sides of the camera body. The Fuji has additionally a two side mount.
X-Sync: The Fuji syncs at 1/500 and the Nikon at 1/250.
Noise / vibration: The Fuji is also the winner here.