True, blocked shots does not mean great defense. I believe Donyell was BE defensive POY and he always played matador defense.
The box score is a starting off point. As you point out there are other things to defense and offense that get overlooked.
Last season, mauconnfan and I pointed out that Alex misplayed his post player frequently when that player set a pick at the top of the key. He just didn't know how to cover the guard or he was slow at getting back to his own player. He fixed that starting with the BE tournament and seems to be doing that well in the first three games. I have to qualify this because the teams this season didn't have the players or plays that would let me observe if he has maintained this skill development from last season.
On the offensive end AO was mechanical on setting screens. Many times he didn't initiate screens but had to be told by Kemba to set them. And he didn't move to a spot in which the screen would prohibit Kemba's player from getting around Alex easily. I see that problem continuing this season.
Chuck, on the other hand, after the first eight to ten games, handled his player really well whenever his player set a screen away from the basket. He he had much better footwork at getting into the middle whenever an opposing guard would get by one of our guards. Frequently opposing guards had to shoot awkward shot over the seven footer or get the ball out of the lane. Chuck never got credit for blocks or turnovers on the stat sheet, but he altered the offense considerably with his play and took the opposing team out of their offensive rhythm.
On the offensive end, Chuck was the best player last season in setting screens. When he set a pick for Kemba, Kemba's man would have trouble staying with Kemba.
These strengths of Chuck did not show up on the stat sheet. His weaknesses did. He was a poor rebounder for someone his height, he got into foul trouble too often, and he struggled on the offensive end in positioning himself to receive the ball and when he got the ball he struggled to score.
I expect people to gush over AD regarding his offensive WOWS. But AD has no clue how to set picks, or place himself in a position that helps the offense. And he struggles on the defensive end as well in positioning himself when the other team is running plays. I expect him to improve. But it is those non box score things that I like watching just as much as the box score things.