TP to Mgent.
While I agree with the other comments, that talent, health, superstars, luck and coaching, so called "tough guys who bring a dirty nose and emotional inspiration due to their lunch pale attitudes" are also a hallmark of championship teams.
These types of players, whether it's at center or point guard - bring a certain pit bull mentality to a team that let's the other side know, there will be no backing down.
Take a look at every championship team since the 80's -they've all had at least one guy like this, if not two. I'll take a quick look at most of them but will probably miss some.
Celtics: Bird, McHale were both nasty in their own way.
Lakers: AC Green, Cooper, Rambis
Pistons: Rodman, Mahorn, Laimbeer
Houston: Otis Thorpe
Bulls: Rodman / Horace Grant
Spurs: Bowen
Lakers: Shaq & Fisher - while Kobe, Horry and Fox were also cheap shot guys
Celtics: Posey, PJ, TA and Perk
Lakers: Fisher / Bynum
and my guess is the finals this year will be OKC and Chicago with Boozer and Noah and Perk and Mohammad - four guys who will give you a good shot when you come down the lane.
It's a mentality - even though Noah and Rose aren't brutes, they have pit bull mentalities re effort.
I think what Mgent said that it hasn't been replaced is key.
2009 - KG and Powe were out - so we missed our superstar and some additional toughness with Powe.
2010 - Rasheed, Perk and TA brought it for us and outside of Perk going down, we probably raise #18.
2011 - we lost or traded away all our dirty work guys in Shaq, TA, Perk and even Harangody.
I would have loved to have seen us pick up Kurt Thomas for this team. He certainly would be more willing to lay some nice hits on people than Big Baby who seems adverse to real physical contact.
You need all elements for a championship but the one Mgent highlights is one fo the critical elements that I think we should seek to rectify for next year's run if we want to win.