I thought this only applied to Sony HDV, and now XDCAM. This is the prmiary reason that we are adopting the DVCPRO HD product with the purchase of a HDX900 camera and AJD1400 deck.
The 3:1:1 colourspace o the Sony offering vs. the 4:2:2 colourspace of the Panasonic offering was the deciding factor.
The fact that the image size is 1280 X 720 is not a deal breaker especially when you take the full frame progressive factor into account.