Around the southeast and Arkansas, I would use the Chevy. They'll both be a test of patience. Higher HP through gear reduction equates to more torque to the rear wheels.
2020 F250 STX CC SB 7.3L 10spd 3.55 4x4
2010 F250 XLT CC SB 5.4L 5spdTS 3.73
ex '95 Cummins,'98 12v Cummins,'01.5 Cummins,'03 Cummins; '05 Hemi
2017 Jayco 28RLS TT 32.5'