I think there alot of reasons why the Lakers are not winning.

One, free throw shooting
Games 1 Pistons 21-36
Lakers 14-18

Game 2 Pistons 21-31
Lakers 17-25

Game 3 Pistons 21-30
Lakers 8-13

Game 4 Pistons 28-41
Lakers 11-22

Thats, and the fact that Detriot is playing that pressing defense, starting when the Lakers inbound the ball. That takes them out of their flow. then when the cross midcourt, they have already used atleast 8 to 10 seconds off the shot clock. Plus, Kobe Bryant has not shot the ball well when In Detriot. Shaq needs help. And now with Karl Malone hurting, and his playing time decreasing, who guards Rasheed Wallace (Tar Heel). The Lakers will come out with fire in their belly for game 5, the question is weather that will be enough?