Nobody “destroys” anyone in these things. They’re not debates, they are simultaneous stump speeches. They’re only if marginally more value that a YT video of “Sam Seder BLASTS Steven Crowder and DESTROYS his argument.” Debates aren’t debates anymore and we’re all the worse off for it.
He wouldn't really though. Here's how it would play out:
Chris Christie: (list of long horrible things Trump did)
Trump: "Why did you work for me then? Why didn't you say anything? Why did you help with the Biden debates? If you felt that way and didn't say anything, that's a lack of courage and character."
/jk We all know Trump would be like "squeal again you fat pig!"