Regardless of this arguement aside, I just wonders, when a pair of speakers are having a specifically designed room for it, by the engineer who knows the speaker going to be installed well, treat with geometry, absorbtion, diffraction etc. IMO any half decent speakers in the mixing (MLP) will sound fantastic, where no speaker in a home environment where a hell lot more compromises are present. but when that's the thing to compare, then it's like comparing a complete package to a single component. IF hearing such a Northwards room is so important, than why can you say it's the best in the world (sorry if I exagerrated) when other studio builders did world class studios using Genelec, Neumann, PMC etc. to build.
From my limited english, I think nobody really questioned that built for the installed ATC room setup will sound great, and any other speaker, say put on stands or put on the consoles won't sound as nice (sheer driver sizes of the sofit mout speaker regardless of brand) should have cleaner and less distortion at reasonably high SPL. But when a speaker need all that cost to really kicking anything domestic out of the way, it didn't make it the true holy grail of speaker, as you can't really share with someone with a glass of wine or sit on a comfortable sofa in that no?.. and personally, I will be curious if you could get a REW and mic to measure the MLP in room response, I guess it would be really close to being flat/near one of a target curve without say me putting my genelecs on a desk of a Gaming PC, I believe all those sound better are related to clean SPL and real flat and good FR