I think it's hard to push a guy as an unbeatable monster if he loses.
But I didn't watch the show, so I have no idea how amazing or terrible Brock looked.
If Brock gets a title shot next month against Punk, he'll be pushed as the guy that owns Ace and can get whatever he wants, and with him not really deserving the shot based on in-ring stuff, he'll be a guy that pisses off a lot of fans and a lot of the other wrestlers (faces and heels) if they want to push it that way. Or it could be a multiple person match with Tensai and/or Jericho, and Brock And you have the whole "I beat Cena so bad he can't be here, so I don't care if I lost" angle with Brock, as others have mentioned. It slightly changes his role, but as a heel that's fine and flip flopping shit like that works.
It sounds like a great show, and I wish I had been able to see it.