I wrote that it was a better device, not that the image quality was better.
But, having said that, there are many aspects to image quality. For example the P backs are much better at long exposures.
To repeat, the highlights are not blown. They may look that way on your browser in an 8 bit JPG, but on my caliobrated screen and in a print they have lots of detail. The brightest white is at about 235, while the black coat is about 35, except in the deepest shadows. Great dynamic range, notwithstanding what you see on your monitor. Trust me, I know what I'm seeing.
I did not shoot tethered.