I have had this talk with other bodybuilders steroid users and non steroid users about this same thing
my conclusion is a guy that has used roids in his past got massive and ripped then comes off will always seem to have more shape and muscle seperation and density then a natural bodybuilder that is the same exact weight and never used roids. the ex steroid user just seems to have different look to them and chemically enchanced look.eveyr steroid user has said this i doubt i would have ever gotten this huge no matter if i worked out for 20 yrs naturally or longer
over saturating steroid recpetors in the human body and stretching the fascia could be responsable for this. A natural body builder has a hard time stretching that fascia where the steroid user in moderate to high dose gets his muscle extra vlumized with fluid and gets great pumps in the gym leading to muscle growth via stretching the fascia that surrounds the muscle allowing new fibers to grow and fillin. its like a ballons its hard to blow up the first time but once it gets blow up over and over its is eazier each time.
so my exp is this i used steroids 7 years ago-10 yrs ago and went off to do other things in life at age 23 like make money .Well i'm age 30 i just started again on sept 1st about 8 weeks ago.Now i have been training scince april but after 4months the results slowed so i jumped on some eq with a theraputic test dose of 125mg a week and 150mg of deca BAM whoola 2 months later I'm as soild and lean as i was 7 years ago like i had just picked up where i dropped the syringe .
dan duchiane the steroid guru once wrote show me a large natural bodybuilder that is lean ,ripped and massive and you will only be showing me one that has used steroids in his past and now just does a cycle every few years to keep from losing it. so it makes sense that steroid users create a body that has increased its ability to stratch the fascia and build new muscle fibers through hyperplasmia then jumping back on steroids your body should eazily be able to get where it was during your last cycle a bit eazier due to the fact that the fascia is already stretched and new fibers still exist but just thicken with the extra androgen use.
its just a theory but it has been talked over by many for years and may have some truth to it