They destroyed him and his credibility
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When a debater who introduced himself as Danny said to Peterson, "You're a Christian," Peterson answered: "You say that, I haven't claimed that."
"What is this?" Danny asked, "Christians versus atheists," referring to the title of the debate.
“While the video is now entitled Jordan Peterson vs 20 atheists, it is was originally called 1 Christian vs 20 atheists, according to an archived version of the page on WaybackMachine.”

Testy Jordan Peterson exchange during Christianity debate viewed 3.4M times
The Canadian psychologist and author refused to say whether he was a Christian in a debate with 20 atheists.

When a debater who introduced himself as Danny said to Peterson, "You're a Christian," Peterson answered: "You say that, I haven't claimed that."
"What is this?" Danny asked, "Christians versus atheists," referring to the title of the debate.
“While the video is now entitled Jordan Peterson vs 20 atheists, it is was originally called 1 Christian vs 20 atheists, according to an archived version of the page on WaybackMachine.”

Jordan Peterson refuses to identify as a 'Christian' in viral atheist debate
Jordan Peterson refuses to identify as a 'Christian' in viral atheist debate Jubilee
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