The main difference I'd guess is whether your prompts are targeted or broad.
Less experienced people tend to use very broad prompts.
Experienced people tend to understand the structure of the code and give explicit guidance such that a larger model isn't necessary to read between the lines.
I noticed with GPT-5.6 (through work), I could step up my specificity by a level of abstraction. But I still intentionally scope the prompts fairly tightly, as I find it produces better results if you need to own and maintain the code.
The main difference I'd guess is whether your prompts are targeted or broad.
Less experienced people tend to use very broad prompts.
Experienced people tend to understand the structure of the code and give explicit guidance such that a larger model isn't necessary to read between the lines.
I noticed with GPT-5.6 (through work), I could step up my specificity by a level of abstraction. But I still intentionally scope the prompts fairly tightly, as I find it produces better results if you need to own and maintain the code.