To get the three star ranking for the stage, you only have one shot to kill all the pigs. Wait for the second round of lasers so that you can hit all of the at the same time. Time your launch so that you can “meet” the incoming lasers.
Power Activation Point
Swing your jedi light saber to bounce off the lasers. The lasers need to kill the pig. Note that you can let yourself get hit by laser too so that you can bump into the enemy pigs.
First Shot Result
This is not an easy shot so you may need to try a couple of times before claiming the three star title as your own.