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Dwight would be higher on the list if it weren't for Andrew Bynum. Drew has yet to see the floor in Philadelphia, erasing any regret Los Angles might have felt in dealing him for Dwight's services.
Once you forget about Bynum, Howard's arrival has been quite the disappointment. Perhaps it's not Dwight's fault, but he looks half the player he was prior to spinal surgery. He's a step late on rotations, disjointed in his movements. Considering that defense accounts for most of Howard's value, his inability to provide it has to have Laker fans concerned.
On the upside, Dwight has been an efficient scorer down low, and he remains good at rebounding. That's nice, but big men carry a disproportionate impact on defense. If Howard never reclaims his old defensive skills, the ugly results will continue in Los Angeles.