As we know that Nikon D5500 is a mid entry level camera and 7D Mark II is a high end APS-C camera, By closely examining both the samples we can clearly see that Canon 7D Mark II showing bit more details in the image, compared to D5500 at both ISO range.
Buy Canon 7D Mark II body at Amazon || B&H
Buy Nikon D5500 Buy it from Amazon or at B&H