How good would the Celtics be if they only got Allen and not Garnett?

take away all kevins points all his rebounds.. his defenseive skills.. i mean the celtics wouldnt have the record they have now lets jsut put it that way.. in my mind they need pierce allen and gernett to win a championship... the trio is deadly lol... celtics would end up a little under .500 they would b a DECENT team but not a GREAT team like they are with kg.