When we won in 2007, Rondo was not nearly as good of a player as he is now, but he was still able to hold down the fort. We came into the season believing that he would be good enough because when you have KG, PP, and Ray, you don't need a dominant point guard. You just need someone to play defense and bring the ball down the court. Pruitt can definitely play that role for 10min a game.
The Lakers won last year with Fisher, Farmar and Brown. They have won 4 times with Fisher as their starting point guard. Thats all the proof that I need to be very happy with Rondo, House, Pruitt, and Ray (for a few min a game).