Hmmn. A more realistic comparison might be to look at the records of the teams each of us faced getting here:
LAKERS:
Denver - 50-32, Lakers won 4-0
Utah - 54-28, Lakers won 4-2
Spurs - 56-26, Lakers won 4-1
Celtics:
Atlanta - 37-45 IN THE EAST, Celtics need 7 games to win
Cleveland - 45-37 IN THE EAST, Celtics need 7 games to win
Detroit - 59-23 IN THE EAST, Celtics need 6 game to win
Now, I am not saying that this series is a cakewalk by any means. I think Boston is the toughest team the Lakers have faced for a variety of reasons. But your analysis is not one of them.
I think if Lakers win tonight, Lakers win the series in 5.
If Boston wins tonight, I think it will go 7, and who knows what happens.
Boston is just not mentally tough enough to get over losing the first game on there home court, where you have been nearly invincible all season. If you dust the lakers tonight, I think that confidence will carry you to a 7 game series.