EOD for me, so here we go. I should have started out with this in the first place to give credit for the photo, but then it would have given the answer away:
X-T1 vs Nikon D750 for Macro - comparison shot - X-T1 Forum - Fuji X Forum. So no, the photos were not taken by me and i don't own either camera. Mind you, the sensor in the X-Pro1 is more or less the same as that in the X-T1.
Marcel was right, the photo on the left is from the Nikon camera and the one on the right, from the Fuji camera.
It just happened that the forum member owns a D750, so this was really not about picking on one particular model Nikon camera. Could have just as easily been a D600.
Anyhow, when i came across the post, i thought it was interesting. Both photos are so similar, it really is hard to tell the difference if you don't have a discerning eye. Certainly, one does not scream full frame.
Again, this was for a bit of fun to see if our eyes could pick out any nuances in the photos that would lead us to an answer/guess. It also shows us how negligible the differences are.
Sorry if i ruffled any feathers. But hey, you don't have to participate if you see it as futile.