Where does Deloitte hire from? Those people are routinely the absolute worst at everything.

I have worked with the big 4 as a contractor and the answer to your question is due to the certifications they require most of the people are better at taking tests than doing the job and are more skilled at wrote memorization than problem solving.

That is one of the biggest reason I look at experience and ask situational questions as opposed to looking at their certs. The number of people with an impressive amount of certs but nothing more than rote memorization is insane. The moment you ask them how to apply it, they fall apart.