@High Seas,
It's quite a stretch to consider that Fatty is miserable especially considering the alternative for older mature cats is prolly the glue factory...I see no cruelty in the idea behind having Fatty watch Screamy eat for Screamy's second portion so as to alter the dominance dynamic so Fatty stops attacking Screamy.
I have no intention whatsoever to let cats run amok and uncontrolled in my home, they never have and they never will. They have rules they must live by, those rules are nonnegotiable and all the cats I've ever owned had to live by them.
Again cats have been domesticated for thousands of years and man has been moderating their behavior for thousands of years and cats have been very successful. Using your viewpoint man has been cruel to cats for thousands of years in terms of moderating their behavior so as to reduce cat fights.
Domesticated cats are not wild animals.