So just putting some numbers out there for discussion:
Celtics +13.4 per game, 9 wins (5 home games)
Nuggets +8.2 per game, 9 wins (7 home games)
Sixers +7.7 per game, 8 wins (8 home games)
Wolves +6.6 per game, 8 wins (5 home games)
All 4 have played 11 total games but the number of home games varies. Accepting that overall point differential is a good indication of team performance or ability, these are the top 4 teams so far. The Celtics and Nuggets as 1 and 2 is no surprise but I actually see the Wolves as better than the Sixers and maybe going to end up being the 2nd best team in the west. PHX may have something to say about that once they settle in of course.