One aspect of photography that I enjoy is black-and-whte imaging. I'm intrigued by the Leica Monochrom 246 (24 MP), but I wonder if the Sony A7r ii with 42 megapixels might give the same IQ with B&W conversion in Lightroom/Photoshop/Silver FX? Let's assume the same lens is used. Would the A7r ii have better dynamic range?
Please don't go off on a flame about how foolish/expensive it is to think of buying a Monochrom...that's not the question I'm asking here. How might these two cameras compare for B&W photography?