Power rankings only matter til the close of business...and that's this week. The real rankings then take precedence, playoff position at one end, draft position the other. The Nets have found their level, around #20. The pundits, as they do this time of year, ask questions, pose problems. John Schuhmann of NBA.com thinks if the Nets are going to improve, it'll be all about defense...starting with Devin Harris.