The Sept 1st 2012 Watchtower carries the article "Our Readers Ask - Do Jehovah's Witnesses Have Women Ministers?"
The first words of the article provide a straight answer "Yes, worldwide Jehovah's Witnesses have several million women ministers"However, the aricle goes on to explain their limitations in that they are not permitted to teach the congregation, "The audience of their ministry is different" . They also do not preside or have oversight.
That opening sentence is a masterpiece of fallacious reasoning, using the well established method of equivocation ie. using words in a different sense to that which the listener intended or may understand.
They use the word "minister" in it's basic literal sense of servant , "one who ministers to your needs" as Jesus used it in Mathew 23 "But the greatest one among you must be your minister [or, servant]. Whoever exalts himself will be humbled, and whoever humbles himself will be exalted.”
A person asking the question, however would not mean that . He would be asking "Do J W's have women ministers (pre·sby′te·roi) of the Christian congregation. ie, one presiding, taking the lead and teaching
This is either a disingenuous ploy to the casual reader who will, perhaps.not appreciate the import of the terms of their ministry , or a sop to the "large army of women", who do the bulk of Field Service, to make them feel better about themselves. Perhaps it is both?
Either way, the fact remains that a woman's "ministry" consists of preaching and teaching outsiders, and that is it ! One might as well state that J W's have child ministers, because they can do that too....