What is funny is that actually he didn't 'lose' any debate...he failed to even provide any response to your claim. He did not make a point. He did not make a counter claim. And without a claim you certainly cannot offer any evidence for anything.
He simply lacks the intellectual ability to engage in debate..and he clearly was unaware of that fact when he offered his challenge.
for this guy, the word 'debate' is like a magic sound he hears the sentient people say to eachother...and he feels a desperate need to be included and validated in some way...so he wants to try doing it. But he cannot do it and he never will...and his ego is spared by the fact he is too stupid to even realize that truth.