Ego-flexing isn't debate.
Talent for debate would be making a point pithily.
For years I thought about this. You cannot argue theology with any denomination. Each group has proprietary views and a genius for its presentation.
It all rests upon one tiny foundation, which if eliminated, brings down the house.
It all stands or falls on Primacy of Scripture.
Think of a pyramid turned upside down. The entire structure would be balanced upon one tiny impossibility. That point is Scripture.
Christianity topples because of the shambles which is scripture. There is no "there" there.
This is where it begins and ends: the Bible is a hundred things and none of them inspired.
The escape from the maze must begin with a close scrutiny of how the bible came to be cobbled together and by whom and for what purposes.
Demonstrating the errancy, the mythology, the non-historicity, the redaction fraud, the tampering and the accretions destroys any pretentions that Jehovah's Witnesses are built upon the will or word of a living god.
Without the phoney foundation of "accurate knowledge" (knowledge of what?) and special understanding; the Watchtower Society is just one more howling madness in a wilderness of delusions.
Start and end with your focus on the Bible and the holographic TRUTH dissolves like salt on a slug.