Yes, the clouding appears to be bad in the above picture, but the picture is also out of focus as evidenced by the unreadable Sony logo on the lower bezel. I'm guessing that's not a Sony malfunction.
That being said, I agree that the clouding is unacceptable.
I'm assuming that the clouds on the Sony are always in the same spot? On my two Samsung 650s which are hooked up to U-verse, when the TV is on and the "cable" box is off, I get a blue screen with minor clouding that "travels" over both of the TVs similar to a very subtle screen saver. However, when there is a picture on the screen, I have no clouding at all on either TV, even when I'm watching content with black bars at the sides or top & bottom. And, when the screen is all black, I also have no clouding.
I mention this only because the screen in the above pictures is blue, not black.