Doing “well” and doing “poorly” on the assessment is more a matter of how much of a fit a person is for the particular job they are applying to. Each person can be a good fit for a job, depending on what the requirements of the job are.
This question is often asked in reference to the problem solving questions in the assessment. Those questions have right and wrong answers.
The odds of getting all questions correct by accident is 1 in 244,140,625 million. So, it is very unlikely someone can get the answers correct by fluke.