We got here by Duke pointing out that consumer room correction, at least currently, (to our knowledge) does not take into account reflected/directly energy when doing level balancing, and hence while it can correct for phase/amplitude, it lacks a degree of freedom in setup.
Ahhh. Well, Toole dislikes them, but I think that over the last decade it's gotten better.
Personally, I do all my own EQ. However!!!! Teaching a noob is a lot of work, and a lot of debate and a lot of different answers.
ARC I think, over the last few years, has gotten better, and yields better than average audiophile results.
Could Duke or myself do better by hand? Absolutely.