MY first company truck after driving the above mentioned pickup was an '04 F150. I was intown with about 2" of fresh snow. I came to a stop sign and (luckily) started braking well in advance but the truck didn't even slow. With no braking action I was about to roll into traffic so in desperation I stomped on the parking brake. In 4wd that locked all 4 tires up which cut down through to the tar and I stopped dead. If anybody had been behind me they'd have hit me for sure, it snubbed up that fast.
Later that winter I took both trucks out on my road with about 6" of fresh snow to check stopping distances. From 45mph my '98 Sierra with discombobulated ABS stopped in 2/3 the distance of the '04 Ford, when I applied brakes as hard as I could. Granted the Ford likely weighed a little more but it also was new with about 200k fewer miles. I later wrecked my back trying to stop that Ford... exploring a woods road on fresh snow, topped a rise and dropped off a hill I didn't want to go down. I stomped on the brakes, braced myself against the steering wheel to push them down harder, and something in my back went "snap". Then I had to drag the darned thing back up the hill again.