They do the same. Arguably the hybrid has slightly better braking with the regen and the same size brakes but nothing to write home about. If you have to pass people at 110mph then maybe the EcoBoost. End of the day both of them will safely tow and stop 4000lbs.
Prob about the same, ecoboost has a little more power. Both will have trailer brake controllers and have similar handling, hybrid may have a lower COG with battery not sure about that though. One thing I do not like about the 8 speed is you cant manually select gears for engine braking only the LOW button which sort of works but is annoying, cant believe Ford left this feature out. But my 4k Ecoboost tows quite well, I also have a super duty for heavy towing but this little truck always surprises me how well it does.