I really need to go back and see why people didn't like Cena-Styles, but I was in the building and for what it's worth, the match had easily the most heat of the night. Crowd was very into the near falls, and AJ's win got the biggest reaction of the night. Masterful performance by Cena, too - he had a real sense of the room and played everything perfectly, did everything he could to build up the moment for AJ.
Hindsight possibly, but that should have been the main event. The crowd was fried after that and nothing got back up to that level. The biggest chants in the latter part of the show were about how ugly the Universal Title is.