D600 Video vs. D800/D800E

Has anyone done a side-by-side comparison? I've got a lot of D800/D800E sample videos, but haven't actually shot with either camera.

I was expecting roughly the same video quality from the D600, but my initial test shots are showing a lot more pervasive moire and aliasing than I was expecting, across a variety of scenes.

Basically any shot with something man made in it tends to be problematic, and even general foliage can show considerable moire.

Video is very difficult to assess, especially when you can't do a direct comparison, so I'm not sure if I was just overrating D800 video, or if I'm seeing a real difference here. For the record, I'm shooting FX format with the D600, trying a variety of scenes, picture settings, and aperatures. The DX format in D600 video is not pretty.