The Celts are absolutely culpable, getting outsmarted (quick/dumb shots, turnovers) and outhustled (rebounds) by the Bulls, both inexcusable. Brad Steven's playoff record is cause for concern at this point as are the playoff bonafides of key pieces Smart, Crowder and Horford - all of whom seem to get worse or fade in postseason.
I do think Butler is unquestionably the best player in the series, and after Isaiah though it should be Horford, next come the 3 Bulls; Rondo, Wade & Lopez better than anyone in green. I think that's legit as you'd take for one series in 2017 any of those guys over the Amir Johnson's, Oleniks, Brown etc.. Celtics roster top to bottom is better than Bulls, but the middle is in favor of the Bulls and the Rondo factor was looming to kill them. Rondo wasn't motivated since big-3 days and nearly played himself out of the league, but he's a jerk and that tendency works in his favor to beat the Celtics. The Celtics would trade Avery Bradley or Smart etc.. for either Rondo or Wade in a heartbeat for game 3, likewise Lopez for Johnson and probably Miritic for Crowder.
Depressing reality is outside of Isaiah's otherworldly regular season performance which is likely not repeated in future years and definitely not happening in this series, the Celtics are a middle of pack team. Vs. Bulls, Celts advantage of being younger negated by rest and experience & size seem way more important. Best thing I can say about the series is Ainge is learning none of the pieces, cheap contracts or not are un-trade-able. Worst thing is I have no bright side for Brad Steven's 2-10 playoff record.