I'll say again, I don't understand people under the age of 50 or so feeling hung up on the title count issue.
Since 1980 the Celts have won 4 titles (81, 84, 86, 08) and have made the Finals but lost 3 other times (85, 87, 10).
In the same span the Lakers have won 11 titles (80, 82, 85, 87, 88, 99, 00, 01, 09, 10) and have made the Finals but lost 4 times (84, 91, 04, 08).
If you take the 80s out of it, it's far more lopsided. Over the last three decades, there's just no contest.
The longer we insist on measuring our franchise against the Lakers, the worse this is going to get. In the modern NBA the two franchises are just on different levels, for understandable reasons. The only way to even this out would be for the Celts to get a Tim Duncan level player and have him on the roster for a couple decades while the Lakers run into absolutely ludicrous levels of misfortune.
The Celtics are still a very successful franchise when not measured against the one franchise in the entire league that has built-in a set of extreme advantages that virtually guarantee it will return to elite contender status over and over again.