They claim it on their own FAQs. http://www.jw.org/en/jehovahs-witnesses/faq/no-paid-clergy/
"Following the model of first-century Christianity, Jehovah’s Witnesses have no clergy-laity division. All baptized members are ordained ministers and share in the preaching and teaching work. "
But they're not when it comes to anything which might inconvenience them because they're all laity too. Everyone's in charge, no-one's in charge, the GB are in charge. Depends who's asking the question, and which answer benefits them most at the time.