well, with AAS, everything you do WORKS.
you grow when you train wrong.
you grow eating the wrong food.
you get lean eating the wrong food.
you grow when you train 7 days a week.
.... now, if you've spent a few years training, and figure out how to train, grow, and get lean without drugs, it's much easier to train, grow, and get lean WITH DRUGS.
that being said.... take a guy who'd gone from 165-205 with no drugs over 4 years, then after 2 years of drugs goes to 230, and take a guy who'd gone from 165 to 230 in 6 years being on drugs the entire time... if they both go off, and both quit training, the first guy will probably go back to 195, and the 2nd guy will probably go back to 165.
now, if they quit training and just maintain hrt test doses, they'll probably maintain 205 and 185 respectively.
not always the case with 100% of ppl 100% of the time, but in general.