With the 5D III just announced (22MP, 6 fps, supposedly clean high ISO) and the D800 (36MP) it appears Canon has made the D700 successor and Nikon has made the 5D II successor. Actually, not a bad strategy. Advanced and high-end users of each brand wanted these cameras badly. Now they will be able to have them.
An undeniable paradox: To think that there is any such thing as an absolute rule is at worst naïve, and at best, shortsighted. There is no such thing as an always-true, all context- or situation-salient, absolute rule that always holds true…including this one!