First of all Walton, Farmar, and Sasha all play. They play every game. They play at least 15 mpg. They are in the rotation.
Scrubs or not they are an active part of the team and when all 3 of them are gone it does make a difference as other players have to play extended minutes. On the 2nd night of a tough b2b it's going to make a difference. Tired legs = poor defense and weak jumpshots. It's incredible that the Lakers were able to put up 111 pts all things considered. Just shows how strong they are this year. The Spurs got away with a lucky one and they know it, they will not beat LAL playing that style of ball in the playoffs.