I have always found my truck brakes soft, but that is mainly because my other vehicle is a Dodge Journey with micro sensitive brakes. A half inch on the Journey goes from no brakes to locked up.
A couple years ago our local bylaw officer ran a RV check weekend. He brought in the commercial vehicle testers with there brake machine, you would apply brakes and then they would run the machine to test your braking and holding power. It would be nice if this was more available so that we could run the test more often and have all RV's tested once a year.