I don't really see what it matters. All cameras do the same thing. Some are better at high ISO, have better autofocus, and more Mp, but that's more dependent on the model than the brand, and you can take the same picture with almost every camera out there and have it look exactly the same. Canon makes nice stuff, but if you're gonna pixel peep than Nikon's lenses have a higher resolution, their best sensors also have better high ISO (except for Sony's latest sensors) Canon usually has really fast autofocus. Really everything changes every quarter so I would pick a camera based off of how you like the controls, and for size. I don't think most people want to lug around a D4 everyday no matter how awesome it is. I chose the A7 because of its size, but I didn't need fast autofocus, or a high frame rate.
If I was gonna recommend a camera for someone who want's something that has all the control of a dslr, fast autofocus, great lens selection, small, can take awesome pictures, and is easily to carry everywhere I'd recommend the new Sony a6000. I stand behind that there's nothing better for the money, and I'm not brand biased.