It's hard to come up with any kind of comparison for Davis. Watching him at Kentucky and the short minutes he gets with Team USA his timing on blocks is elite. From day one I think he'll start out (defensively) as Theo Ratliff circa 2004.
Theo was pretty amazing in his prime. You literally could not go in the paint while he was there. Swat the $hit outta everything.
But didn't Okafor win ROY? I take it that's his point. My comparison for Davis is a slightly bigger Kirilenko. Kirilenko was the master of the "five-by-five" - at least five in points, rebounds, assists, blocks and steals - which is much harder to get than a triple double. Davis shows the same kind of versatility. Or you could be boring and go with Garnett again.
Davis has an underrated offensive game and is a solid passer as well. I like Lillard a lot, but there's no way in hell AD doesn't win ROY unless he gets a major injury.