Simply put ABS is a safety mechanism which doesn’t not allow wheel rotational lockup in an event of braking. It takes away uncontrolled skidding.
ABS equipped cars show improved braking and better control, specially steering remains responsive and driver can also steer away from obstacle while braking which was previously not possible due to under-steer. ABS is greatly effected if the brake pads are poor or faded.
The newer versions of Anti-lock braking system have electronically controlled rear and front brake bias, this function is capable of load sensing and adjusting the brake force on the wheel about to slip. It is also called electronic brake force distribution or EBD. Emergency brake assist EBA, traction control system TCS, or electronic stability control ESC are just upgraded versions of Anti-lock Braking System with EBD having more inputs such as from gyro sensors and steering angle sensors and not only relying on wheel speed sensors.