I took one of these photos with the Fuji X-T2 and the other with the Nikon D500. I had the 35mm f1.8 lens on the Nikon and the 18-55mm lens on the Fuji. I set the aperture and ISO to the same setting on both cameras.
The only variable was that I shot the poppy handheld, so I may have leaned forward or backwards a little in one shot compared to the other. That and the fact that the 18-55mm lens on the Fuji is image stabilised.
I don’t think that made any difference because the shutter speed was fast enough to copy with any camera shake.
So I am interested to know whether you have a preference for either of the photos? Personally, I think they are both good for colour accuracy.