You can already see it from how Miami played earlier and how the bulls are playing right now. The rip hamilton move was just huge for Chicago as you can see how he improves the spacing on the court (also a good passer with 2 assists already). The difference in talent between Chicago and Miami and the rest of the east is huge
I think Chicago & Miami are gonna be the 2 best records in the league by a good margin - I expect Chicago to go about 54-12 and maybe Miami to go 55-11