The votes are in on this one and it looks like the fat girl would eventually overtake the karate woman. She has the greater ability to knock the slim karate chick out. Some argued that the karate woman could win with some well-placed blows. But if those blows were ineffective and ultimately absorbed by the big girls mass, the karate woman would eventually be taken to the ground and the fight would be over quickly. This happened quite often between martial artists and wrestlers in the ultimate fighting arena. Of course, these were skilled wrestlers. But unless karate chick is skilled enough to knock the fat girl out, take out a leg or whatever, she'd probably get her ass kicked.
In the case of my former girlfriend, she got some good kicks in on the fat girl but she didn't have enough strength to knock her out. Plus, the girl was very tall as well and had the reach advantage. My girlfriend landed some kicks to her face and even doubled the fat ass over. And at one point I thought she had the girl. But the fat teen caught her leg, picked her up in a brutal bearhug and took her down to the sidewalk. She immediately started pounded on my girlfriend, both weakening and bloodying her up pretty good. My girlfriend did get out from underneath the girl's mass in time, and got a few more ineffective kicks in. But the girl got inside of one of her kicks, placed her hands on both sides of my girlfriend's head and actually picked her up a foot off the ground. From there, the girl used her athleticism to beat up on her some more. Then, quite ironically, the fat teen lifted one of her big ass legs up and kicked my girlfriend in the gut, knocking her against a telephone pole. From there the girl started really pounding my karate-skilled girlfriend. I mean this girl was vicious and was punching my girlfriend in the face, the arm, chest, stomach and even in the back when she turned around. She even slammed her head into the telephone pole. I can only wonder what would've happened to her had I not intervened.
So those who said that the karate chick would be a quivering mess in this fight were quite correct. Just because a woman knows karate doesn't always mean she has the ability to call upon her skills in a street fight. And I think my girlfriend got scared just looking at the girl's stature. I could see it in her eyes.