Hi John
To be honest, I haven't followed PiccoloNamek's thread at all. The time it was launched (the CD era) I still wasn't into equalizing. In a later PM exchange with someone mentioning the thread I was confronted with a method consisting of making fixed frequencies sound equally loud to the ears using corresponding sine waves. But that's a problematic approach since it doesn't take note of the intended headphone-compensation curve – either diffuse-field or free-field –, and equal loudness for all tones isn't really desirable. I'm quite sure it was related to said tutorial thread. Nevertheless, using pink noise is a good starting point. And of course the available measuring graphs. And first of all the SonarWorks curves, if available somewhere on the net. SonarWorks seems to be a good product anyway, so if you don't mind to pay for the labor it frees you from, I would go for it.
Apart from that I could offer you the EQ curves I have worked out for the headphones I own (e.g. via PM). These may just serve as a guideline, because other listener's HRTF may require some deviations, add to this my age-related high-frequency hearing loss.