Stopping distance has a lot to do with tires. In normal driving, the stock calipers work fine.
My Mustang has 6 Piston StopTechs. When not on the racetrack, they perform very similar to Ford's standard calipers. The larger calipers substantially help reduce brake fade after 20-30 minutes on a racetrack. Stock calipers and pads overheat to quick. As well as high performance pads work on the track, they are not meant for driving around town. They need to be warm to hot to work effectively.
I believe the Germans add big red calipers as "eye candy" more than performance on trucks and SUV's
The average person in a normal passenger the car will never experience brake fade.
If you are towing a trailer that is large or does not have it's on proper braking system that is working correctly then you could. But since I would guess that on average fewer than 20% of the cars on the road are towing anything whatsoever this makes the chances even less that someone will actually have to use the brakes in a situation other than a normal stop that might cause brake fade. You either have to ride brakes for a while or make several very hard stops in a short. Of time. You can be going a hundred fifty miles an hour and stop super hard and not have any brake fade because it's just one stop.
I used to race the roads all the time but by race I mean drag race. It was all about light to light and going. It was not about stopping. You always hoped you would be able to stop but it wasn't something you did often. Normally after a race you let off and coasted anyways and often talked back and forth between cars. There was never any hard stopping and we don't believe in cornering.
Edit: I will give a good word of advice that it is not a good idea to drag race in areas you are unfamiliar with. I was once racing an 86 or 87 Grand National in a city about 25 or 30 miles away from me. The guy was local and do the road and I did not. I, however, was not going to let him beat me. I was in a 67 GTO with a very well-built Pontiac 400 with a 411 positraction Detroit Locker in the rear end and the car was much faster than a stock Grand National.
Now what I do love Grand Nationals and have owned two of them and currently have one the owners had a slight Touch of what all the Mustang GT owners had back in the 80s and early 90s. They thought they were tough because they had a puppy little Factory car. These guys didn't know what it meant to build a real engine. So we used to pull up beside Grand Nationals point at the fender for the badge said Grand National and when they roll down the window or look at us I would say "Nah, I don't see anything Grand about it".
I would just give Mustang drivers to evil eye or call their car a *************. But since I was GM guy at heart I wasn't quite as cruel to the gym guys.
But anyway we were doing about a hundred fifteen and came up over a slight hill on this big wide six-lane Road and it ended!
You had to go left or right oh, unless you wanted to blast through a guardrail and hit god-knows-what.
Now the Grand Nationals didn't have the best braking system because the power Master System could fail at any time but an 86 Grand National with front disc brakes certainly had more stopping and then my heavier 67 GTO with 4-wheel drums. I will say it was the best muscle car brake system I have ever had in my life. It was the freest Wheeling car with less parasitic drag that I've ever seen and it stopped excellently evenly, and never locked up any Wheels.
But he knew it was coming and I didn't! I was already about a car length and 1/2 in front of him but he knew how much room he had and I didn't. So when I saw it I got on the brakes hard and was barely able to slow that thing down to make a big swooping left hand turn.
Some moral of the story, know your area and Terrain before getting into an impromptu drag race out of town.