Assuming that your body fat is in the normal to low range, IMHO, your gains on any cycle are largely dependent on caloric intake, proper training, and REST. There are still many factors that effect gains... Age, general health, genetics, etc...
You can never plan on a set ammount of gain. Steroids are not magic. They merely write instructions telling your body what to do. Like an architect's blueprint. But you are the builder. How your body carries out those instructions depends on the kind of foundation you have built, the quality of the raw materials you use, and your skills as a builder.
That being said, higher doses don't necessarily help you build better. Especially if your foundation is weak. I've done reasonable cycles with good gains and massive cycles with no better than good gains. And, to my surprise, the best gains I've had so far came from my last cycle. A simple 500/wk Sustanon (sust) cycle with no orals. Amazing! I can only surmise that not taxing my body with too many heavy drugs and ancillaries allowed it to function better. I felt better, slept better, ate better, and trained with overall high energy. I didn't feel all "juiced up" or edgy like I did at higher doses. So less is somewhat more.... At least in my case.
I'm in PCT now... That sucks... But I haven't lost an ounce of gain so far. My next planned cycle is gonna be 300 test/ 600 tren.... Simple and clean. Can't wait!