She'd make him tap in the first round. @Z.T.O just cause he's trained in martial arts doesn't mean anything. Most UFC fighters have been training and fighting for years before they make it into the UFC. You think an old man (relative to the fighting game) can just waltz in and be successful. He's no Brock Lesnar who is a legitimate wrestling champion and a freak of nature physically. So fanboy or not, you've got to realize how ridiculous this looks/sounds.
Have to agree about the martial arts comment. I am only a couple years older than punk, I went to state in high school amateur wrestling, and was roughed up pretty bad. So afterwards rather than wrestling in college, I took up shotokan karate instead. I've had extensive training and I have been practicing karate with some real fights for over 15 years. My wrist has been broken over four times and my right knee twice and I have had a broken rib before. I have a pretty good tolerance for pain. That all being said, I wouldn't last 30 seconds in the UFC or any MMA in my weight class solely due to my martial arts training. Martial arts is a nice talent to have and it has by far helped me defend myself when the situations presented themselves, but it hardly guarantees anyone a chance of winning. MMA is not like fighting in a karate tournament.
Now, I actually love CM Punk, but I think he's in way over his head here. But I also understand the desire to do something before you are too old and will only regret it. I don't see him being at all successful in this venture.