[mturmon]

You are raising a good point, but you are probably wrong ("this century").

Tracked vehicles run by joystick are now used operationally for IEDs. There are resupply and "lug extra cargo" missions that Big Dog is very close to fulfilling right now. There are "augment human teams" missions that smaller legged, tracked, and wheeled platforms are getting close to fulfilling. (Go into this building and look around, take up this position and guard this building entrance while the rest of the team goes in elsewhere.)

The humanoid robot can perform these tasks in a more versatile way, as mentioned elsewhere in these comments, because it can adapt to many real world situations where humans are present (e.g., doors, stairs, ladders, vehicles).