I find the comparisons at this level of cameras is just nitpicking in regards to IQ.
Online reviewers and trolls will single out a few things and beat that to death, rather than look at things that really matter.
IQ in the real world is so close it's ridiculous. If you need more than a stop or two of DR regularly outside of landscape or realestate photography then you really should be looking at your skills and not the camera.
I think the tech is so good now that people have got lazy and do not invest time into studying actual photography outside of clicking the shutter and raising shadows and lowering highlights on Lightroom or whatever.
I think the more important question is reliability, lens selection, total cost of ownership and so on.
I'm not dissing any camera, I like canon because I am used to it, they have never failed me and I like how the images look in raw straight of the camera. Plus I like the lenses. A nikon shooter could say the same thing and no one would be wrong.
I can't see how you could go wrong with either camera.