All i care about is images ... And i know, i cannot get such images with the 7D or the EOS-M and also not with a Canon 6D or 5D3 or 1D-X.
Changing this post because I shouldn't hand wave the claim.
Let's take his first shot of the model in the chair with "Exceptional dynamic range, from the bright window to the deep shadows with no noise and smooth tonal trasition. No fill was added to this severely back lit shot."
* The window is blown completely out.
* The shadow to the right is lost completely to black.
* Critical point: a strand of hair on the model's head is also blown out. She wasn't as underexposed as you might imagine.
Please note that these are technical observations. The shot itself is very nice. Sometimes you want clipped highlights or shadows for contrast with the subject. He is making very good use of bright, blown out backgrounds for "glow" and contrast.
But this shot does not have "exceptional dynamic range." I'm sure the model was underexposed in the original file, but I doubt he had to push more then a stop or two, and this would not have been from the deepest shadows. She was closer to middle gray then to black.
If you cannot get a similar image under similar circumstances with one of the Canon cameras listed, the problem is not the camera.
Same thing for the next two samples. The third sample is the most underexposed, but he did not push the shadows very hard as she is not as brightly exposed in the final version. I've pulled more detail then that back from shadows like that with Canon sensors, but you will want to apply some NR when you do so.
You can come up with examples where Exmor yields more DR / better latitude (ability to push shadows around).
These are not it.