Go to LxForums and ask your questions. You will get a lot better information. I really don’t care what HR mag or an outdated summary on Allpar had to say.
First example is that the 5.7L Eagle did not have 11:1 compression. It was 10.5:1, just like the 6.1L. Also, a lot of what you were citing came from sources that were confusing the truck Fa engines that had variable intake runners with the 5.7L car engines that didn’t.
It’s more complicated than just reading something on the internet and thinking you got an education of fact...because you didn’t.