Interesting that the Mobil 1 in the second test seems to show pistons just as clean as in the pics shown for Valvoline Restore and Protect. And this appears to be Mobil 1 Extended Protection, not even Advanced Clean. And it just so happens this is on a Pentastar, which powers my Jeeps. I'd call that solid evidence that my engines don't need Valvoline Restore and Protect or Mobil 1 Advanced Clean. So it appears to support my hypothesis in a pretty strong way.
What's more impressive is that they used the crappy fuel. I run mostly Top Tier.
The next test, which was the 120,000 mile test, was even more impressive! My engines get treated MUCH better than these, with much shorter OCI's and probably better oil filters.