Ummm no Chris it is there to help with braking for two reasons. When a car without ABS locks up the tyres at a particular speed it will take longer to stop than a car that is braking hard but the tyres aren't locked up. Before ABS this was left upto the driver to modulate the pressure on the brake pedal so that he or she is still braking as hard as possible but the tyre isn't locked up. As this skill is not taught to people the only time they find out is when they need it the most and by then it is too late. ABS simply takes the driver out of this equation and allows the car to stop in the shortest possible distance.
The 2nd reason for ABS is the one you were trying to get at. When a car is emergency braking with its tyres locked up, the tyres have no grip in order for the driver to be able to take action to avoid a collision. Whereas with ABS (or with the driver able to modulate the brake pedal without ABS) the tyres have enough grip for the driver to be able to steer around an object.
I hope this clears it up for you....