Digital camera sensors are generally optomized for the 5600k of the spectrum as opposed to the 3200k (you see the difference mostly in noise levels). But that's almost every digital camera, not just the GH2. So you're statement was technically correct, but a bit misleading.
Hmm, well I don't know much about lighting or have any frame of reference to talk about it so I just described it as I could. Shane said they went out of their way to use regular sunlight and then resorted to mostly available light for some indoor and night time shots.