It's amazing how often you bring this up without ever acknowledging that there are just as many instances, if not more, of small lineups defeating big ones. Yes, including in the playoffs.
This thread is about D'Antoni, which led to who many think was our best coach, Cotton.
My comment was about Cotton and how, in an undermanned situation, his KC/Omaha Kings still eliminated the Suns in the playoffs. He knew what it took to beat a favored team in the playoffs -- power -- even with a depleted team. I have always admired him for that.
Which is why I agree that Cotton was our best overall Head Coach.
Regarding the point you made about
just as many instances, if not more, of small lineups defeating big ones, I think, specifically, that most fans will agree that power at the "4" and/or "5" during the post-season will produce better playoff results than "small" when the league (refs) allow more physical play.
I have a feeling you would agree with that conclusion.