I am not going to argue with you, you have your graphs and I have mine, but as you mentioned before, speakers are subjective and I assume you meant preference of how certain speakers sound are subjective. Well so is the effects of audyssey!! It is a fact that Audyssey XT32 SubEQ HT can do a decent job on the lower frequency band, though it most likely is not the best REQ out there.
What Audyssey does to the higher frequency band, say above 500 Hz is a different matter, some prefer bypass, some prefer reference or flat and some, like you, prefer turning it off. That is a matter of preference and is highly subjective. Please save me the Dr. Toole thing (sorry I just anticipated that..
), I have great respect for Dr. Toole and would love to read his book, but he is not the only expert and does not have the final say on everything audio, as different research by different PhD or PhD candidates often yielded different results and conclusions.
On the objective side, I hope blue is with Audyssey on, it doesn't look the best Audyssey can do but not too bad. If green is the one, then I would agree you are better off turning it off. I suspect most would prefer the red one, not me as I prefer everything to be on the neutral side. The red curve actually looks like DEQ on but for that to work for me the spl has to drop down to around 70 dB, not at reference level.