I don't have issues with cats being a trouble to other cats. Cats can gang up and beat up any cat that seems to be too stubborn to stay one place or find trouble. I have seen this type play several times and those trouble makers used to respect themselves onwards.
Pets are not humans. They can fight in this minute and the next minute, you will still see them patroling together. Every cat have the power to fight their way out.
It might be a kill or even fighting for their territories. When one pet steps over to the other pet's territory, it used to cause a big fight.
