I thought OKC playing Durant at the 4 would be an issue and prevent us from playing Duncan/Splitter, but Pop was able to let Splitter shadow their worst offensive player (in the stretch I remember, Fisher) and leave Kawhi on KD. If Splitter or help defenders can essentially prevent his man from getting off open threes, it's such an advantage on the other end of the floor where Durant is forced to body up TD/Tiago.
Now when it comes to Miami, Lebron's just a different animal playing at the 4. But we can worry about that when the time comes.