The main advantage of the Nikon over the Canon is the 200mm equivalent lens focal length. That's why I went with the P7000 over the Canon G12 last year. I use the camera for photographing plays and concerts on occasion, and need the long lens.
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!