clearly he will never have the dream shake or the sky hook
I'm not buying this. The guy is 19 and learning to be a post player. It's fairly obvious that his post moves are limited, but he has the length, athleticism, and coordination of an elite post player. I wasn't alive then, but I doubt KAJ's hook was unstoppable at 19. It's something that he developed.
I also agree with you about patterning his game. He may never be AS
dominant as Kareem with the sky hook, but he could be dominant, nonetheless. Watch him under the basket now. He gets great position, but most of his shots are relying on length rather than form. He still shoots layups like a guard sometimes. As his form develops and he learns more techniques, he will continue to grow into more of a post presence.
I'd have to check, but Davis seems noticeably longer (no dick jokes) than Garnett.