I'm a Canon guy too, and I'm heavily invested in Canon equipment so I won't change.
But I will admit that Nikon does make a better body. I think the Canon lenses are engineered better, but Nikon bodies are better.
If you speak to most of the old timer photographers, you'll notice that they all use Nikon. That's because Nikon made better bodies for a long time. They messed up when everything transitioned to Digital and then everyone's new camera body was a Canon. Now Canon has more market share. Unfortunately, Nikon never really caught up, so they just started licensing sensors from Sony so they could stay afloat. Now with the Sony sensors, Nikon has far superior performance to Canon in the area of low ISO performance (ISO 100 - 400) and dynamic range.
If I were to buy a body, I might buy all Nikon gear. But I'm so heavily invested in Canon that I won't switch. The truth is, that we all take great pictures, so it really doesn't matter.