Having owned both, it merits mention that I currently have 2 superdutys in the driveway.
Both have the 7.3 diesel, and both are 4 wheel drive.
I have stuck my F350 dually in mud up to the running boards, dropped it into 4 low, and it drove right out.
That goes for 3' deep snow, using it's back end as a plow to get the snow down enough to use a front plow.
I've had it get loose on gravel, caliche mud, sand, rocks, but never fatally stucked it EVER.
I've hauled 10 tons of logs out of the woods, 2 chevys and a toyota (at the same time) out of the beach sand, and a couple Jeeps that high centered.
I adore my truck.
If I had a 2wd, I would have sold it long ago.
4 wheel drive is something that you never miss until that moment you need it, and that's the million dollar moment- you either shine like a champ, or curl up like a chump, and theres no inbetween.
Doing what we do, with horses, feed, trailering, etc, etc, etc, you pretty much are obligated to 4 wheel drive.
Quit dawdling, cowboy up, and get the 4x4.
You'll be so glad you did the first time you lock it into 4 low and pull your idiot neighbor out in their weeniewagon, and you snicker yourself to death all the way home.
I RIDE, THEREFORE I AM
COWBOY UP OR GO CRY IN THE TRUCK