I just want through the playoff stats briefly and wanted to call out some of things surrounding the final scores. I didn't triple check these things, so if I got something wrong just call it out and I will correct...

First I'll list all of the teams that allowed the Celtics to score 131 or more points in the regular season and playoffs:
Los Angeles Lakers

Phew. Ok, with that out of the way this list will be all of the teams that lost to the Celtics by 39 or more points in the regular season and playoffs:
Los Angeles Lakers
New York Knicks

Round-by-round here are the total scores for the Boston Celtics:
Round 1 vs ATL
Totals - BOS 694 ATL 610
Average (7 games) - BOS 99 ATL 87

Eastern Semi's vs CLE
Totals - BOS 588 CLE 596
Average (7 games) - BOS 84 CLE 85

ECF vs DET
Totals - BOS 549 DET 539
Average (6 games) - BOS 91.5 DET 90

Finals vs LAL
Totals - BOS 613 LAL 558
Average (6 games) - BOS 102 LAL 93

So just a few notes on that stuff. Like LAC vs PHO, The Lebrons actually outscored the Celtics over their 7 game series, but were unlucky about when each particular set of 48 minutes had to end. So the Lebrons played them the best at +1 ppg, followed by the Pistons (who are in the process of being blown up) second at -1.5ppg, then the Hawks, and finally the Lakers at -9ppg.