You can't compare makers in general, you can only compare models. It won't be difficult to find a pair of models, one from Canon and one from Nikon, with comparable prices in a shop, of which the Canon has a higher rating that the Nikon and it won't be difficult either to find a pair where the Nikon has a better rating than the Canon.
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Nikon or Canon ? what is the best for video and photography professional use like youtube video making, or travel use