The edited version of the show only had 7 of 8 questions for Hannibal Buress, with five being answered correctly. Carl stated that Hannibal answered 6 correctly, meaning that the question cut was answered correctly or there was a mis-count. If Hannibal had answered only 5 questions correct, he would have had a total of 11 points.
When Peter asked Carl how many questions Jessi had to answer to win, Carl stated that she would need "4 to tie, 5 to win outright". That would only be true if Brian Babylon was in the lead with 12 points against Hannibal's 11 points, not 13 as Carl tallied. There would be no way for Jessi to tie with Hannibal due to Jessi starting the round with an even number of points while Hannibal started and ended with an odd number.
In the end, it didn't matter for Jessi had more than enough correct answers to surpass either Hannibal or Brian. But, it does affect placement for Hannibal and Brian as their placement would actually get swapped.