True but DR is pretty much meaningless to most shooters. Dynamic resolution has become an even more overused and overhyped catchphrase than megapixels, most dont even really understand what it is let alone if they really need it. If the vast majority of shooters needed a lot of DR, you wouldn't see Canon cameras dominating every sports event and all the other places you see Canon cameras in abundance. i'll take the superior resolution over DR any day of the week. I think the 5Ds is fantastic for my uses and produces an almost 3D look in solid lighting. Very sharp and clear.
You'd take an extra 8 mpixels over a two stop DR gain. What exactly would those extra megapickles buy you? I know exactly what extra DR buys me...but for your photography...what would 50 mpix buy you over 42 mpix. Nada.