Unless I'm misinterpreting it, there is just as much Nikon interest in the USA as Canon interest. Which appears to be in stark contrast to most of the rest of the world which is heavily Canon weighted. I wonder if that's partly why a lot of internet sites with a large US contingent (eg this one) seem so fixated on Nikon? Every day, the same topics arise - Is the 5Diii as good as the D800? Why does DxO favour Nikon? Should I switch to Nikon? Nikon certainly generate more discussion than their sales figures (and worldwide internet interest) would warrant. There are other camera brands out there.