The photographer is responsible for taking brilliant photos. Until you have a few years experience using the fundamentals of photography, you are NOT going to see any difference between those two brands.
At the pro level, yes, in general, Nikon cameras have better performing sensors and you can discover this by visiting DXOmark.com.
I shoot a whole lot of sports indoors and at night under the lights. The two cameras I use mostly are the Nikon D500, a cropped sensor camera designed specifically for sports and action photographers and a Nikon D800e, a full frame sensored camera I use when I need to be shooting with two different lenses during a game
Here is how the Nikon D500 sensor compares to the Canon 7D, Mark II. These are the head to head competitors for those who shoot sports and need the extra reach of a cropped sensor camera.
As you can see, the sensor in the D500 outperforms the Canon 7D, Mark II in the areas of colour depth, dynamic range and low-light (high ISO) situations.
There are some additional features that the Nikon D500 has that is unique to all other APS-C sensored cameras.
Ultra fast and accurate autofocus, 153 focus points (and yes, during a game I may use most of them), build-in wireless and bluetooth, a joystick to quickly move the focusing points around on the focusing screen, and a tilting LCD (which I never use, but could be important do some people) and perhaps the most important to me as a sports shooter, a battery that can shoot up to 1240 shots, twice that if you add the battery grip to the camera.
So the bottom line is that it is NOT the camera that takes better photos, but the photographer. At some point the photographer will be skilled enough to produce better images is the tools they have are up to the task.
You are really going to have to do your own research here.
Before I purchased my Nikon D500, I rented one and shot half a football game with it and the other half using mey D800e. After reviewing the results using the D500, I purchased one to add to my kit.
If you have the skills and experience, rent a Nikon and a Canon with similar lenses and do your own tests. Shoot the same subjects, under the same lighting conditions and see which is easiest for you to use to get amazing images. Tor the best test, shoot in RAW and use Lightroom to process those images. I suggest you rent one over one weekend and the other over another weekend.
After viewing the results on your 24 inch computer monitor, you should have your answer