Understood but the pre-EQ curves are not identical and yet the post-EQ are. If the pre-EQ curves were identical, I could see how the post-EQ would end up being the same. It sounds better with Audyssey engaged, yes? I find with my Audyssey engaged, not only is the bass more defined, I can hear micro-dynamics that are completely veiled otherwise. These micro-dynamics make a huge difference in the definition of images and their relative location on the soundstage. v4 for sure has made a big difference compared to v2 but the room, even though I've pulled a few tricks, still sucks and blows. XT32 is another one of those fancy gimmicks that ought to be worshiped.

A-LFR/1000-8 & 2/500v4x2
Air Force, Freedom
had v2