It's Boxing vs MMA time again and this time, UFC commentator Joe Rogan weighs in as he claims that UFC Women's Bantamweight Champion would beat undefeated boxer, Floyd Mayweather in a fight!

Joe Rogan, the long-time UFC color commentator, was on ESPN's SportsNation, where he said that in a hypothetical match-up between Ronda Rousey and Floyd Mayweather, he believes the UFC women's bantamweight champion would have the overall advantage.

"It is all about how much time Floyd has to prepare, because he will really have to work on his takedown defense," Rogan said. "That would be the big thing. If Ronda got a clinch on him, it is not just about worrying about being taken down to the ground; it is worrying about knees to the body. It is worrying about her manipulating his body in ways that he doesn't understand. ...It is too hard to avoid the clinch. If you watch a Floyd Mayweather fight, they very rarely end in a one-punch knockout. He has brittle hands. His hands break. You are talking about small gloves where hands are going to break even easier. She keeps her chin tucked, hands high and gets ahold of you. There is going to be a lot of things she is doing that he doesn't understand."

Rogan said it would take "six months to a year" before Mayweather would be able to learn enough of the ins and outs of the grappling world to fend off Rousey.

"He would have to go with the very best trainers in the world and spend a good, solid six months to a year on nothing but grappling," Rogan said.

So what do you think? Is Joe Rogan wrong or is there some merit to what he is saying?