What seperates the best pentester from the average pentester?

I am wondering about what seperates the top pentesters compared to the average pentester. E.g. do the top pentesters have more qualifications e.g. computer science degree followed by alot of other qualifications e.g. CCNA, OSCP, CISSP, CompTIA etc. Or is it programming skills?

I apologise of the question sounds stupid however I am not very knowledgeable in this topic. Hackers and script kiddies seem to have a clear distinction on what seperates them, is this the same with pentesters?

Sorry if there is any spelling mistakes English is not my first language.