Most likely Cruz didn't want to dignify such a "do you beat your wife" type of question.
Hardly a "still beat your wife" question. It was a "have you EVER" question. To me that's a pretty easy man question for a man to answer (yes or no) not hiding behind Carly Fiorina's insertion into the PR fray.
Your obfuscating. So it's not a "still beat your wife" question, but instead a "have you ever beat your wife" question.