Its not like the shine at all really. The shine activates the instant its on while Lucas only hits when it turns off. Meaning you can set up for the heal and and let go for the damage. Really useful for approaching Pikachu, Fox, Wolf, Ness, Lucas, Luigi, Lucario, Pit and maybe Mario and Falco. When people see you rushing they will fire their projectile. Though Mario and Falco may alternate with cape and kicked reflector. Anyways being able to control when to let go for damage means that you can stand still against Pit until he approaches and damage him if he screws up. Also this move has bigger range then the shine.