Would I have ended the PPV with that particular match? No, I don't think I would, but then I'm not the WWE and I don't know what creative wanted to leave the audience with at the end. I got the idea from the beginning that Breaking Point wasn't meant to be a "feel good" kind of event, at least not as "feel good" as Wrestlemania. So, perhaps this is the best way.
Also, they were in Montreal, so I don't think that the WWE could resist at least doing some reference to the famous screwjob by the same name. You know how they love to rub Canada's nose in that whenever they're in town. Ending it on that note was just another way to do so, just because they were in Montreal. Now while I also understand that this ending was really the only way that they could prolong the feud and not hurt the credibility of either wrestler too badly, I think the ending on that note was just to make sure it was remembered. So, given that it's likely the sort of thing the WWE wanted the fans to go away with, it's probably the right way to end it.