All I can say is...my 2014 F150 Boost with the max tow /payload package (1 step down from the heavy duty 1/2 ton) pulls my 2018 Keystone Outback 328RL 38' 9k dry effortlessly & smoothly.....set cruise control-lol
Granted I have E rated truck tires; Hellwig rear swaybar, Loadlifter 5000 Ultimate air bags, tow tune, Raptor exhaust, etc...
Their is not a better 1/2 ton gasser that can touch the Ecoboost.
Boost has a diesel like torque curve and plenty of HP.
In fact I'll be towing up to Flagstaff AZ this weekend ( from 1100' to 7500' above sea level on 7% grades with ambient temps in the 100°+ region).
Truck is just a beast.
I'll pass a few Hemi (?) badged Rams, Tundras, Silverados, on my way up the hill and their pulling 24'-27'ers max.