Requirements for a sexfight

[Ninja]

I wonder if they are requirements to set up a successful sexfight like we see in tribbing for example can fat women tribbing ? or if there is a fat woman and a fit one i think the fit one will dominate in a sexfight and the fat one will get tired easily after a minute or two because a sexfight or tribbing  especially needs strong pelvic floor muscles,strong core muscles and a hell of endurance. In your experience did you see a match like that or what do you think how things will go ? Has the fat woman a chance to go toe to toe with a fit one ?

[Ninja]