Re: Why didn't dolph cash in?
He's a heel. He told you he would, and he didn't. It's what they do.
Also last time this happened, Show got DDT'd onto a bunch of steel chairs by Mark Henry, and then Bryan cashed in. This time, Show won and was still standing. Ziggler wouldn't have stood a chance against him.
As somebody else mentioned, they're both heels, the cash in would turn Ziggler face and we don't know if that's what they plan on doing.