Not according to Ford. This is taken from my manual.
"The braking system of the tow vehicle is rated for operation at the GVWR"
Yeah all trucks can stop its gvwr if it has one....however read a little more on the gvwr/gawr subject and find Ford also says in their Fleet body service weight specs; ........
#4...... *Front and rear GAWRs will, in all cases, sum to a number equal to or greater than the GVWR for the particular vehicle.*
Example.....the Titan may have a 4900 rawr and a (est) 5000 fawr = 9900 lb minimum braking performance. Truck makers do their own testing but you can bet the brake systems on our trucks now days far exceeds even the gawrs which is the minimum.