"Start reading the board, and spend some time reading and research how anabolic steroids actually work."
I've spent time doing both already.
"The entire primise of your question is ridiculous."
I disagree. The premise of my post is that the dosage required to obtain a given benefit may change as the person uses steroids. Because steroids can cause numerous changes in users' bodies, including long-term and permanent ones, it is not ridiculous to wonder if one or more of these changes could impact the effectiveness of a steroid.
The premise is consistent with observations of the dosages and results obtained by less experienced versus more experienced steroid users. For example, one experienced user on this board, who notes in his signature that he has taken an enormous amount of steroids, revealed that he takes 500 mg of Winstrol each week just to maintain. Clearly, novice steroid users can experience noticeable gains, rather than mere maintenance, from a lower dose.
"If you make reasonable gains on a given stack, you will always be able to make *some* [emphasis added] gains utilizing it."
The question is not whether someone will always be able to get "some" gain from a stack that previously proved effective. The question is whether the user will always be able to get the *same*, or substantially the same, benefit from the same dose in future uses.
"The only different between sustanon, test cyp and test enathate are the esters, which would have nothing to do with what you are talking about."
I understand the difference between the three. Testosterone cypionate and enanthate are testosterone esters, while Sustanon 250 is a mixture of four testosterone esters: propionate, phenylpropionate, isocaproate, and decanoate. The esters have different lengths, and thus different lipophilicities, and thus release into the blood stream at different rates.
The fact that Sustanon, cypionate, and enanthate all consist of testosterone esters does not render self-evident the statement that they must have the same return use characteristics. For example, one might speculate that the lower dosages of any given ester allowed by Sustanon permits users to return to it without substantially higher dosages. I am not claiming that this explanation is true, but am merely using it to show that the fact that all three consist of testosterone esters does not necessarily mean that they have the same return use characteristics.