I believe that Ford did upgrade Superduty brakes for 2013:
Improved brakes for 2013
F-Series Super Duty’s best-in-class payload numbers are supported by an improved brake system that delivers increased capability and usability.
Braking engineers increased brake rotor swept area by 16.4 percent in front and 14.5 percent in the rear for maximum braking to help dissipate heat, especially on long downhill grades.
These changes support a 700-pound increase in the maximum Gross Vehicle Weight Rating to a best-in-class 14,000 pounds. Improved brake pads and a retuned booster enable enhanced pedal brake feel to increase driver confidence.
“We’ve really improved brake feel,” said Michael Watkins, brake system engineer. “There’s refined modulation in the pedal – you really feel the stopping power. With a full load of cargo, drivers will notice strong, confidence-inspiring brakes.”
A larger parking brake for F-250 and F-350 models also allowed an increase in maximum payload rating.
Available adjustable pedals also enhance customer comfort by personalizing the interface between driver and brake system.