I'm currently making a radio controlled fighting robot and have pulled apart some drills which have a brushed RS550S DC motor (0.5Nm 18V 60A so 1080W) and a gearbox attached. Right now I'm looking at replacing the brushed DC motors on the gearbox with a brushless motor because I can't find any ESC's that would work with a brushed motor at 18V 60A.
So my question is how can I find an equivalent brushless motor to replace the brushed motor. I have seen people say brushless is more powerful etc but I have no proof of that. Can a 14.8V 45A 1400KV brushless motor potentially have the same torque as a 18V 60A brushed DC motor? I can't find much info on torque for brushless motors which is why I'm asking here and I don't want the motor blowing up my gearbox particularly quickly. Is it as simple as if the brushed motor is 1080W I need a 1080W brushless?
Thanks If you need any further details I'll be happy to provide.