Hydraulics have a massive benefit that the actual actuators have amazing power density - and the actual bulky hydraulic pump and valves can be far away. Also, the pump can be shared with many actuators, making the whole system smaller and lighter when you have 50 actuators and only need to use 5 of them at full power at a time.
Electrics win for energy efficiency and no-leaky-fluid, and also are improving pretty quick.
Electrics win for energy efficiency and no-leaky-fluid, and also are improving pretty quick.