Pneumatic actuator and electric actuator compared to where

if the pneumatic actuator and electric actuator are compared, the user is expected to prefer to electric actuator, because the electric actuator is more compact, don't be afraid have the risk of leakage don't need to pneumatic pipe and line maintenance, so when people will be more inclined to use pneumatic actuator? If the bearing larger load and application in high torque output, you can use the pneumatic actuator, its reaction of action and speed is faster. If you can use this in the harsh environment of pneumatic actuator, because it has the ability to better working environment to adapt to, especially in the easy combustion and explosion, dust, strong magnetic force. If it is in these places use electric actuator, it will produce larger accident, pneumatic actuators will come in handy at this moment. Can't say pneumatic actuators and electric actuators, who is better than who, can only say in different applications can use in comparison is more reasonable and applicable.