So a few days ago when you thought Canon would improve DR a lot and make it the same as Exmore or close then you cared a lot of about DR and now that it seems VERY likely that it hasn't improved at all and it will be behind the D800 by a noticeable margin, now suddenly high DR is suddenly a pretty useless feature for a camera to have? And you blasted me for being a troll for days?
I still care a lot about DR. The difference between you and I, however, is that I've not jumped to any conclusions about what DR the 5D III is capable of. I personally still think it will be demonstrably improved over the 5D II once some more scientific tests are done. Two reasons I believe that: One, Canon has explicitly claimed on several occasions that they made SENSOR-LEVEL improvements to SNR that lead to improved ISO, better noise at high ISO, AND wider dynamic range...for both the 1D X and 5D III. Second, it seems the base read level for the masked off areas in the 5D III is 2048 rather than 1024. No one really knows how those values are used, why there is a non-zero base, or how a higher base over the 5D II might affect DR in the 5D III (you certainly have more "negative" room...about twice as much.) As for comparison to Nikon...since switching to Sony sensors, they have always had the edge when it came to DR...by a stop or two. Unless Canon has made similar kinds of hardware-level read and ADC improvements to their sensors, its doubtful they will gain the full 2 - 2.5 stops of DR improvement. Realistically, figure 1-2 stops (more so for the 1D X than the 5D III, obviously.) Nothing really changes on the Canon vs. Nikon front there, so as far as I'm concerned its rather moot to worry about it.
I haven't preconcluded that the 5D III offers no image sensor improvement over the 5D II. Thats been my stance the entire time you and I have been arguing with you all over DR (and the reason I've argued in the first place.) You seem to think everyone is just going to go balls to the walls tears because a few tech heads on the net crack open the new CR2 files with open source and beta software, a thorough lack of understanding of how those files may need to be processed to extract the maximum amount of DR, make a few claims about how the 5D III is already a failure, and that tomorrow...oh, wait, sorry, on 12/12/21...the world ends. It MAY be true, just as much as it MAY NOT be true. Not all of us are as naive as to simply believe the tech heads, and we're quite happy to believe the improvements Canon claims (not to mention our own eyes) are real until official tests by DXO, DPR, and friends are done with a full and proper understanding.
To play the devils advocate, lets say the absolute worst case so many of you seem to fear actually ends up being true: The D800 beats the 5D III in every single category by miles. Does that mean the 5D III can't take better photos than the 5D II, or the 1D IV, or the 7D, or the 1D/s III, or a whole bunch of prior Nikon and Sony cameras? The answer, as we all know, is Hell No!
So what does it really matter...unless you literally have the funds to jump ship, dump your entire kit, and replace it with an entirely new Nikon kit? Nothing.