We must keep in mind that every camera is a compromise of performance attributes. Every engineering feat is a choice between conflicting parameters. If you want fast frame rates, you have to give up resolution. If you want high resolution, you have to give up speed. Noise and pixel count work in opposition to one another. If you have vastly different photography needs, you need more than one camera. Nikon obviously built the D4 and the D800 for different applications. If you can have only one camera, you will have to choose one whose performance specs fall somewhere in the middle - a compromise. It makes no sense to judge a camera's performance in an application for which it was not designed. Why do you think there is a D3x and a D3s?