My 2 cents

I feel our defensive efforts are bigger than the sum of its parts.
This means a couple of things;
- We have some defenders that look HEAPS better than they are
- Some people's work goes underrepresented
Example; JT's defense on KD wasn't just HIS defense. Even when it was just 1on1, JT knew he had people waiting to collapse behind him ... and KD knew that too! This means KD has several options taken away from him, not because JT is there, but because JT is there *and there's 2 guys on each side of JT that can and will collapse at a moments notice*.
This is partly because Rob/Grant all our guys have tools to offer on help defense. Smart up top by reaching in and stealing a ball. Rob down low with potential blocks.
It also allows JT to gamble for a steal a bit more often; as there's always 2 guys waiting to collapse and cover for him.
I think Marcus Smart is the best individual defender at his position, in the league. He's got the tools and skills to keep up with the fastest guards in the league. This is a big deal with how fast/deadly guards are these days, and how refs favour them.
On top of that, in a switch, his speed and athleticism allow him to ball deny anyone who's bigger than him. This works a bit like the steals - it is possible because there's going to be help in defending if the pass still makes it to the person he's defending.
TLDR: imo our defensive schemes make insanely good use of our individual skills, as our team covers eachothers weaknesses, making us all look like defensive masterminds.