Same thing that happened with Zbo last series. They played some great defense on him, then he lost his confidence and started missing shots he would normally make. Plus, as long as SA doesn't turn the ball over and keeps getting good shots by swinging the ball, they won't let him or Wade get going in transition which helps confidence wise with their jumpers.
Also the same thing with Golden State's shooters.
Miami's bench has gotten them about 30 PPG in this series. Birdman, Miller, Cole have been great and done their part. The 1st unit is the problem for MIA.