How really is FX better....

For me it is the wider view and all the advantages that come from physical size of the sensor.

The iso performance comes from more of the pixel size and lower density. D600 has lower density and so better iso and better iso noise means better DR. But the advatages of higher iso advantage is only good when compared to the same size images. And if you buy the FF for larger prints that advantages siezes or equals the best of DX. My 800e and D7000 both have similar noise look when viewed at the native size base on pixel density size.

I believe overall it is give and take. Nice to have both along.

Nikon definetely promoting the FF heavily by all the pomotional price cuts. Isn't that very obvious??!!