I don't even mean the trailer brake / light package. He was referring to the fact that if you are going to be towing heavy things, you need to have much stronge

I don't even mean the trailer brake / light package. He was referring to the fact that if you are going to be towing heavy things, you need to have much stronger brakes on the truck itself since most of the braking power on a vehicle ends up coming from the front wheels. Being able to stop a heavy thing that is going fast is as important, if not more important, than being able to get the heavy thing up to speed to begin with.