Surely Ryback won't lose his first PPV as Paul Heyman's newest client. Curtis Axel didn't and the dude's had a bad enough string of losses over the past year as it is (ironically, beginning at HIAC last year against Punk.)
The way I see it going (and the way I hope it goes) is that Ryback beats Punk at Battleground and then they meet once more in a cell match at the HIAC PPV, which brings their feud from one year ago full circle. The stipulation of that match is that if Punk defeats Ryback, Punk then gets a Hell In A Cell match with Paul Heyman and it'll be just the two of them locked inside the cell, with Heyman having nowhere to go. And Punk FINALLY gets his hands on Heyman in a setting where no one can come to Heyman's rescue, and Punk whips and beats the shit out of him and slams him against the cell, hits him with the steel steps, beats him with a kendo stick, etc. Then when Heyman is on his last legs, Punk puts him down with the GTS (can he even lift him? Ryback couldn't even lift him last year on that house show...) and pins him. Ryback and Axel have to come out and pick up the pieces after the cell is up and Punk is gone. And that's the end of the Punk/Heyman feud, at least if they never intend on doing a Punk/Lesnar rematch...