You are wrong. I've been using Mills AB for years and the NPK is on the label.
I ran a side-by-side test last year with Mills AB vs DynaGro Foliage Pro and it wasn't even close. Plants that got Mills were bigger overall, and the leaves had a better texture.
I tried 48 hrs of darkness before the chop and it seems to work well. I don't think it actually increases THC, but I do think it gives the cure a head start by using up stored starches.