Cleveland, Boston and Toronto are predicted top three but RPM has the Pistons in striking distance to make a push to the top.
For those who aren't familiar, ESPN developed a statistical prediction system called RPM (real plus-minus) a little while back. From Kevin Pelton and ESPN Insider:
RPM was developed by Jeremias Engelmann and Steve Ilardi to estimate a player's on-court impact on team performance, measured in net point differential per 100 offensive and defensive possessions. RPM takes into account teammates, opponents and additional factors. When used along with playing time projections, it's proved to be a very accurate predictive tool overall.