By Hillary Busis
Updated October 04, 2012 at 04:08 PM EDT

Sorry, Big Bird: Jon Stewart thinks Mitt Romney unquestionably won last night’s first presidential debate. “I’m sure President Obama now realizes, ‘Oh, preseason’s over. I should probably familiarize myself with my presidency, and learn some of the various numbers and things that go along with it,'” the Daily Show host told Good Morning America‘s Lara Spencer today.

And Stewart didn’t stop there. “It wasn’t so much [Obama’s] body language as the mouth language that he was using,” he explained, citing the president’s frequent pauses as a tic that made Obama not seem “present” in the debate. He compared Obama’s strategy to the tactic Muhammad Ali famously used in his 1974 “Rumble in the Jungle” match against George Foreman: “It’s the rope-a-dope, but instead of letting your opponent punch himself out, you just get beat up.”

Stewart himself will hopefully fare better this Saturday, when he goes head to head against Bill O’Reilly in the “Rumble in the Air-Conditioned Auditorium.” The comedian is fairly confident about his chances, even though “yeti” O’Reilly is 10 inches taller than he is: “When I’m done with O’Reilly, he’ll convert to Judaism. This guy is going down.”

See more of Stewart’s quips — as well as a few serious words about his relationship with O’Reilly — in the video below.

Read more:

Presidential debate review: Romney dominated from early on, Obama embraced his inner ‘Obamacare’

Jon Stewart and Bill O’Reilly discuss ‘The Rumble’ debate and their bromance

Jon Stewart to Arnold Schwarzenegger: ‘Couldn’t you just go to the future, then come back and kill that Arnold?’ — EXTENDED VIDEO