I'll be surprised if he doesn't learn how to deal with ten candidates on a stage, if nothing else, the man learns quickly.
His best line was about there not being time to be PC, and how much trouble we are in as a result of being cowed by the PC police ( police is my word).
Luntz was made famous by Ross Perot. That says a lot.
Well yes, it was his first debate on a national stage. If it was me, I’d be nervous as hell. Trump didn’t seem to be nervous but obviously he couldn’t hold a candle to a Ted Cruz, who has been debating his entire career. He survived and he’ll only improve over time.