"Debate me, you coward!"
Are you skilled at debate, then?
"I& #39;m the best!"
So you would agree that there is such a thing as debate skill?
"Of course!"
Ergo, the outcome of a debate is contingent upon at least one factor other than the veracity of the position being defended?

"Uh... yes?"
Then a debate between us would only demonstrate that you are & #39;the best& #39; at debating (a claim I am happy to concede), and would, in no way, disprove my ideas. You could, presumably, argue that the world is flat and still debate circles around me.

"No, a debate shows who& #39;s right!"
So the party with the correct view always wins debates?
"Yes."
Then you don& #39;t need me. Literally anyone else could argue my positions with equal effectiveness. Presumably, you could play devil& #39;s advocate and argue both sides against yourself.

"You& #39;re just scared to debate me in public!"
Oh, I& #39;m positively terrified. You& #39;re so much better at debating than I am, after all.