There is a difference between a minister and an "ordained minister." Ordination typically refers to a credentialing process. Churches want ordinaed ministers that are recognized as teaching correct, not apostate or careless, church doctrine. B/c the Witnesses don't have a seminary, formal procedures, they are defining ordinations themselves.
The Catholic church has lay ministers and priests. The lay ministers are prob. not ordained. It is implicit that they are saying only elders and pioneers have a special status. I should have paid attention to the FN. Of course, this from the religion where no one is above another, not like those Babylon the Great religions.