The rookie of the year race is pretty close at this point between Damian Lillard and Anthony Davis. But the answer of who should win is obvious. Think of it this way: would you rather have the next Tim Duncan or the next Brandon Jennings? Yeah. Case closed.
Davis may not put up the gaudy scoring figures that Lillard does, but remember that Lillard is 4th in the league in MPG while also being a total chucker. Davis plays a more conservative a game, at least when he’s not smacking the crap out of your shot attempts. Or rising over everybody to slam it with ferocity.