Yeah, it's hard to call the Lakers complete when they don't have a real starting Center (I consider Pau more of a PF, and Bynum is a stiff) and they have a 3 point guard rotation - and they are very lucky when one of them happens to play well (as Fisher did in Game 4).
There were other teams with a more solid, even more talented lineup. But those teams got eliminated earlier largely due to injuries or bad luck.
That said, the Lakers were definitely one of the best teams this year, but I don't think it's at all easy to say that they were the best team in the league or that they would have won the Championship if every other team had not suffered from any major injuries.