Davewav1, I don't think I could agree at all with your statement about the soundstage of MLs being like listening with headphones. I have owned a lot of speakers in recent years, including Thiel 2.2 (while not the 2.3, they are very close). I liked the Thiels (especially for the couple hundred bucks I paid for them). They imaged and soundstaged well, where quite detailed (which I like) and had an overall very good presentation. I also own Wilson W/P 5.1s which do everything the Thiels did only much better (which they better do considering the price difference). I love the W/P. I also owned Wilson Duettes, also an excellent speaker which I prefered over the Thiel. I also owned VS VR 4 JR and several Totem models and some B&W speakers, none of which were as good as the Thiels.
However, my conflict is with your sound staging statement. The size, width, depth and focus of the sound stage with the Martin Logan speakers is in my opinion much better than I experienced with the Thiel speakers (though I did find a pair of 7.2 did a marvelous job of these attributes as well and would probably rank the 7.2s above the MLs). My reference is ML Quest Zs only.
I would not say that all around the MLs are better speakers than Thiels as this is purely a subjective matter and taste of sound one is seeking. MLs have their weeknesses no doubt and for some (possibly even me, I am still determining this), the Thiels and many other brands of speakers will be more favored, for others, not.