I agree he needs the victory more than Punk. Curtis Axel won the Intercontinental Championship in his first PPV showing as a Paul Heyman guy so Ryback needs a similar triumph (even if it comes as the result of a little cheating) to show Heyman why he was the perfect Paul Heyman Guy to propose to, especially since I'd put more stock into Ryback being a future star than Axel.
I know some might hate Punk losing four PPVs in a row, but they could play into that by having Heyman say that no matter how hard Punk seems to try, he just can't seem to one up Heyman and get a victory over him or his guys (pinning Axel at NOC doesn't count, as Heyman still won the match.) He could say that it should be about now that Punk is starting to hit rock bottom emotionally and realize how worthless he is without Heyman and how futile it is to fight against Heyman as opposed to having him on your corner. He then tells Ryback he wants him to finish Punk off once and for all in a HIAC match at the next PPV of the same name, the same event that the two met for the very first time exactly one year ago. Heyman tells everyone that Punk can't take another loss without either crawling back to him or leaving the world of WWE entirely, and everyone will see that first hand after he loses to Ryback again at HIAC. Punk getting his victory there means he can take another loss at Battleground, though. Ryback need the victory this Sunday more than Punk does.