What is an experienced project manager capable of?

Just the same as an experienced manager: concentrate on the essentials, avoid details, preserve the outlook and choose the best in relation to organizational goals. It takes quite a few years to make it quite to the spinal cord.
Dynamic Baseline Model is the only model which deals with the project manager's experience, and it goes as follows:






For the model, you can see that you do not necessarily get better at project management by being able to produce Gantt charts etc. Yet focusing the vast majority of programs on such skills. The model here shows that project managers should learn much more about change management - then you can have project assistants to the other.
Read more about modelen here.