My 2 cents for what its worth. Most big men take around three years to develop ,and of course that depends on the amount of playing time and the coaching they get.
The truth is, I don't know squat about Williams other than when I saw him play in college. I always thought then that he looked a little robotic at times, but I couldn't argue with the results. All we have now are stats, and they can be very misleading, especially if you haven't seen the player actually play. I don't know about you, but the Hawks haven't been on my, I can't miss this game list. The Hawks also seemed to draft another PF every year. It seemed they wanted instant gratification, which seldom happens.
If one had looked at Robert Parrish's stats after two years you wouldn't have been impressed, and apparently neither were the Warriors, who traded him to the Celtics and the rest was history. Not saying Sheldon is the next Parrish, I'm just saying we have to wait and see.