Yeah, no one did a controlled study, it was documented cases of actual cats who either fell or jumped from various height in NYC and found that cat that fell between different height either had no injuries or had serious injuries or died. Someone analysis this and kinda figured out what happen. They said that cats can not accurate judge the landing if they are still accelerating at high speed.
Here is a article that talked about the study that was done, I got one height wrong it was around 7 stories where cats had more injuries then at some point above this the cat is fine. I could not find the original study.
http://www.todayifoundout.com/index....survival-rate/