It is fair to say that, for any professional exams or any
examination for that matter, the younger you are, the easier you pass. This is
because examinations often involve memorization, and that when candidates are
fresh out of college (or during college), the “book-smartness” is generally
higher than those who are out of school.
At the same time, the skill that we gain as we enter the
workforce — the experience and expertise gained in the field, is not tested in
the exam. It is not that the examiners do not care about this skill set, but
that it is pretty hard to “test” your experience…
In other words, the answer is yes, taking the exam later rather
than soon is likely a disadvantage.