Your wicked , LOL ,with your Emo Phillips joke .
However in the 60`s when i was a true believer their were two occasions where I witnessed two instances of other churches challenging Jehovah`s Witnesses ,one was with the Catholic Church writing articles about why were the J.W.`s having so much success in converting Catholics to the J.W.`s.? , the other was a Church of Christ sect that had a series at their local church answering questions about J.W.~s and how to deal with them .And this is going back some 40 years ago.
So getting back to my O.P. why has their not been a significant advancement in challenging J.W.`s in all this time , till now by any Christian religion , surely they should be able to tear their arguments , doctrines , failed prophecies ,.,misapplications of scripture ,taking scriptures out of context . etc. etc.