Should auditors provide an opinion on engagements or is there a risk to it? How about ratings? Do they help or hurt?

In this AUDIT DUEL, Richard Chambers, former CEO and President of the IIA, and Norman Marks, former Chief Audit Executive, debate the issue.

Richard thinks that "internal auditors must exercise caution whenever assigning opinions" and that "audit leaders must be as diplomatic and conscientious as possible when assigning ratings."

Norman thinks that "professionals are entitled to an opinion" and he "hate[s] ratings".

What is your opinion on the topic?