I'll give it a go.
This stat is giving a charge the same weight as a block. However, defense extends beyond these three stats. A missed charge is now either a foul or an easy bucket because you have taken yourself out of a defensive stance. A missed block, however, can result in a foul or an altered shot. Altered shots are incredibly important to interior defense and they do not show up anywhere but opponent paint fg%. I don't think ours is very good.
A steal is good if successful. A missed steal, however, results in an overplay or a foul. When DMC swipes down at the ball and misses, his hands are down and the defender has an easy bucket. These aren't factored into any of these stats.
A guy who plays sound man defense, stays big, alters shots, rotates, and does not foul will be a good defensive player, right? These don't show up in that "def" stat. But it's defense. It's just not glamour defense. If you want these stats to mean something, you have to make them relative. That means that you need to track how often someone misses the steal and allows an open shot. You have to track how often someone plays a passing lane and overplays, which results in rotations and then an easy bucket. You have to track how often a guy defends the paint and if he ends up wiht a block, a foul, an altered basket, or an easy basket. You have to track how often a guy loses his own man in error and causes his teammates to compensate.
Even with blocking, you have to block smart. If you're constantly going for the block, you will get faked out. If you don't foul, but give up an easy shot, that won't show up on the stats. But if you're tall enough and bouncy enough, you'll eventually get your blocks. You just give up a lot in the process. So there's smart blocking and stat blocking.
We have efficiency metrics now, but basketball stats are still far behind the real game story in terms of defense.
I always wake up late so I didn't read the whole note and for that I apologize. I will come back and read it. As I think about the whole subject, spurred on by your first few comments, I realize there is a risk at every defensive move. Every defensive move can go wrong and end up working against the defender. Now I forget why we are arguing about Cuz except perhaps there is nothing more to say about Tyreke but the center of it is what I think is a unique talent he has of draying fouls. Now, I agree I'd rather that he had Camby skills but he doesn't. What he does, considering his size, I think is remarkable. In the end, is it the best way of playing defense for a guy his ize, probably not but with his physical skills and limitations, he does what he can do. That sounds silly but if a guy is getting positive benefit from an unusual
defensive style for a guy his size, I am not going to tell him he is wrong and try to change his style.
I read it.
Every attempt at defense has its risks especially the three that we focused on, blocks, charges, and steals. The other aspects of defense are not measured as you state at the end. We do not have the stats that cover all aspects of defense.
As an aside, I must say it is fun to get back into these arguments about minutiae, as that's what I think this is, because it means we all have our minds back and are not worrying about where the team is going to play. That has taken away from the energy to argue like this. The universe is back on it's access.
My point is what is the best defense for Cuz to play and not what is best for a generic 6'11" guy. Seems to me he could have more blocks but he doesn't and I don't anticipate a major turn around. I suspect he doesn't have the agility in the air to make many blocks other than to stick his hands in the air and hope he gets a block. I doubt he can move that weight around to do much more. I am personally amazed he can draw the charges that he does. Occasionally the call goes the other way but I think as the years pass, he will get the benefit of the doubt. I have seen calls go against him that I call anticipatory calls. The ref just assumes that no human could draw a charge in that situation so he blows his whistle against Cuz. The problem for them is that Cuz DOES have the physical skills to draw charges.
I don't want him to change. He does well at what physical skills he has. He needs help, though. Covering the area near the rim is not a one man job and what weaknesses he has needs to be covered by someone with the skills he is missing. If we had a well matched duo of bigs, there would be little to argue about.
I doubt if that stayed on the subject of stats but I don't enjoy discussing stats and honestly, all the testing on me and my family says we are very good at stats. As you mention at the end, stats will always be a bit behind what is going on the court, to paraphrase. Stats are not the answer to the whatever the question is although they contribute to the answer.