I find it interesting how most rabbis won't hold public debates anymore. Especially with Dr. Brown. Of course if you watch some of his debates you can see why.
The problem with "debates" is the one who is most "eloquent" usually wins. The one who is the better speaker or who is more prepared, not neccessarily the one who is right.
Another problem is that most people have their own beliefs and are just watching to "back" their debater, not necessarily to understand and research the facts.
It is much better if you
read the presented facts and then come to your conclusion.
I'm sure there was many a political debater who "won" the debate, but really wasn't good for the position as the other.
The real purpose of debates are to raise issues for the audience members to more fully investigate.