I'm not an analytics guy don't like looking at numbers just watching the games...
From what I've seen the East is very good this year Chicago, Miami, New York, Toronto, and Washington got much better then they were last year if you take Atlanta, Boston, Philly, Bucks, Nets, Hornets, and the Pacers that's already 12 .500 teams...
Cleveland is playing not bad either I don't think anybody is really tanking anymore which is very good.