Yes Canon does, but none of them have the same range of DR at base iso to mid range iso that the Sony chips have, it's very simple to test. I really don't care about iso 12000 and up as Canon may be better, but it's still not very useable without a ton of work.
There were two reviews that caught my eye when the Nikon 800 first came out, Michael's review with the bookcase shot and the Fred Miranda review with the awning where Fred showed how much detail there was in the Nikon file in the shadows.
That was what I wanted, I don't need 10fps, or great iso 51K, just a good single image taken in the iso 64 to 200 range, as that pretty much covers my needs. Take any Canon (the 6D is an exception) and expose it in a shot where you have bright light and deep shadows, expose for the highlight, and try to pull up your shadows, you will see the red blue banding that Canon has had since the 1ds MKIII. You need multiple exposures to get there with a Canon. NOTE, the 6D is much better here as the noise will not have the banding, but instead looks like film grain. But there is still noise.
Everyone looks for what they need, I saw it in Nikon and made the switch. Canon has something coming, who knows when, and what. Multiple layer chips like Foveon have not shown good results much past base iso, so if that's it then it's still a limited camera. If it's standard CMOS, I can't see it being much better than what Sony and Nikon already have in DR. The reality of more DR is becoming smaller and smaller tweaks from what I have seen.
Life is short, and I didn't like selling a bunch of gear that I had used successfully for 14 years or more, but I have had great results since early 2012 with Nikon and only miss the Canon TS-E 17 and 24 as Nikon can't begin to reach the quality of these lenses with their lineup.
And the world to me looks much better in full frame instead of 1.6 cropped, so even though the 7D MKII is a good improvement, it's focal range is very limiting for landscape work (at least what I shoot). And many still seem to forget that the D800 family have a great 1.5 crop that still gets close to 16MP of resolution.
And to speak of resolution, one thing is for sure, I am done in that chase. The only thing I can think of that really needs more than 36MP is a huge print, either on paper or canvas, and that is very rare sale for me these days. The world lives on Facebook and Instagram and the instant gratification of posting what you just did for the world to see. No image created for the web will ever benefit from more resolution unless the world overnight switched to 4K or higher displays which isn't going to happen for a while yet.
For sure it's only one opinion, but in the long run, looking back, if Canon had come out with a 20MP chip that had the same DR as the Sony's I would have been more than happy to stay in their camp.
Paul