Is ABS breaking safe for brushless systems?

[bruce750i]

Testing the braking distance sounds interesting and fairly easy to video.
I use a FSGT-3b tx and it has a on/off, slow, normal and fast settings(pulse rate). I think it helps to keep a 2wd car's rear end behind the front end during hard breaking.
Reverse is weird, pulsing the power on and off. (but it does gain speed)