I don't know you and I'm not looking for an internet argument...but I heard a different story. Jess asked Duff (who was in Olathe) to post for him and he did. Jess took that argument off the table. Further, he was offering to fly people in just to stop the talking.
Jess has more going on in his life than playing a 20-ahead set with someone. That could take a week or two to settle if the game is close. He wants a game where someone can win or lose something...not play for 10 days and quit even. He offered several different (reasonable) games and they stuck tight to the 20-ahead stuff. That's one helluva long ahead set in anyone's book. Look at the COM, it came down to 3 games after 3 days of play!
If you go back in time, jamie offered a game, Jess (among several others) accepted, and they are back to negotiating a game with him. How many concessions does Jess need to make before they get down?
pokercartel is right. Jess said he would guarantee more if $20k wasn't enough to get them there. There are few restrictions on Jess' end.