I have heard mixed reviews on DUTCH for cortisol testing. Some say it's the gold standard and others say it's not as accurate as saliva testing. DUTCH tests all your sex hormones though so there's definitely an advantage.
Depends on why it's being ordered, for the average users blood work the sheer amount of data may leave one with more questions than answers. The difference in accuracy is unknown to me but I can't imagine the Dutch test is objectively more accurate.