Yeah, only probelm is almost every team besides Boston, LA, Chicago, and Orlando need a defensive big man. Plus, defensive big men are a dying breed. Which is probably why there's such a demand and why the teams that have them are all contenders.
Those numbers are also unadjusted for strength of competition. Hayes undoubtedly faces better offensive units than Miller. Adelman is smart enough not to play Scola and Miller together against potent front-lines for very long.