Cavaliers look so much better, especially on defense.
I do wonder if part of it is because teams haven't really seen much of this new group though. Like, the Celtics went on a huge winning streak, but as teams have started to figure them out more, the C's don't look as unstoppable anymore. Remember too, the C's started with a relatively new group (only 4 players from last year's team), so it's not like film could help other teams early on either.
Of course though, they have Lebron, and that makes a difference too.