Question

what makes the difference between being good and excellent in their evaluative criteria. It is during this stage of the process that writers often start understanding exactly what they are saying themselves.

Answer 1

When you are good at the evaluative criteria,you are capable to understand the process.

When you are excellent you can understand in a high way you can identify better, make some changes and see in another perspective what was said before. This will make difference in the way of which one will have in the process and how it will continue.