It will be interesting to see how the 1D X measures out! The 5Diii didn't fare so well against the Nikons. The 1D X should do better, I'm curious about where it will land. I think the D4 beats it slightly.
The D600 result is extremely good and in my view important to it's sales levels. Some people don't agree but I think DxOMark casts a wide influence and has weight.
To be honest, I can't see anything stopping Nikon from taking over worldwide DSLR sales leader with a showing like this for their 2012 cameras, including the very good DX line that now includes the D3200 as well.