Ok then, so for you, there is no difference between the way that Nikon and Canon handle photograph colour palettes directly off the sensor (and saved as jpg -> not RAW)?
Ok I'll bite.
Yes there is difference, they handle it differently but even Canon and I think Nikon have different profiles for SOOC jpg files.
So if I'm shooting landscape I can select landscape profile in camera which will make colors bit warmer and change sharpening profile.
If I understood profiles well I could even when I'm shooting portrait use landscape profile to get similar warm shot as you did.
I'm guessing same is with Nikon and if you selected different profile your original photo would be slightly different.
Additional factor is WB and that can make your photo either warmer of cooler, this is done automatically but you can also set it up.
I often experiment with it to see how would photo look like.
Some cameras are bit better at it but still is not 100% again it also depends on situation and light at the time of shooting.
As we can see there are many factors that can influence SOOC image and just prescribing it to camera system would be foolish.
Personally as less confident shooter I just shoot raw and try to get the look later on.
Last year I got Fuji xt1 with few lenses and to tell you the truth difference is minor and I can replicate fuji look with canon raw file if I want to.
Regarding style, quality of photography and equipment relation I can only tell a story:
We had 20 shots competition, you get 20 subjects, you have 3 hours and only hand in card with 20 shots no editing.
Equipment ranged from p&s, all ranges of slr's to hasselblad.
Guy won with canon PS, most creative and interesting photos of the day and you could not figure out which system he used.
So to reiterate ad nauseam, there is nothing in that photograph that is distinctive or representative of any camera system and can not be replicated using canon or fuji.