There are a lot of factors that determine the effects of AAS. You can't generally say 6000mg of AAS will Yield more results than say 3000mgs. Aside from receptor site upregulation, another topic in itself, you have to consider many factors when taking certain AAS.
-For example, metabolic inactivation (process and time) is different for every AAS
-Does the specific steroid used converts to estrogen if so how fast and how long?
-Is the steroid oral or injectable?
-What is the half-life of the steroid?
For example, Dihydrotestosterone is 2.5 more active in the body than Testosterone.
So unless you are taking 1 AAS at a time you can't really conclude that a certain dose of combined AAS will yield to better, less or equal results as say 3000mgs.
That's why you have to experiment yourself. Even then you have to consider different compounds in your cycle that will yield perhaps better or worse results than others depending on what you are stack is. Unless you take 1 or 2 compounds only and experiment from there using these 2 compounds all the time in your experiment, it's almost impossible to figure out if a certain dose will yield better results. Genetics, food intake, and many many other factors will come into play as well.