You take Revel or some other good measuring speaker, put it in a room with hard flat surfaces and you don’t need a FR chart to know that it ain’t singing like it could.
What is the point of having a golf swing panther DAC in a headless panther room? You tell me...
I did tell you. You need to spend time actually learning what sound reproduction in room involves. Measurements of rooms can generate incredibly bad decisions especially when it comes to "treatments." Ask any top acousticians what they think of DIY efforts and they will universally say they are done poorly. And that people slap this and that on the wall, routinely creating dead rooms. First thing they do is rip everything out and start over.
Audiophiles can learn to treat room modes however. There, measurements do tell the truth. Fixing those when combined with an excellent speaker creates wonderful results. No need to go and create an ugly room full of padded walls and such.