4WD generally provides more traction and easier power delivery on loose terrain; 2WD can be simpler, lighter and more challenging to drive well.
Where 4WD helps
Loose dirt, grass, mixed terrain and high-power launches often benefit from power at both axles. Crawlers also rely heavily on multi-axle traction.
Why 2WD still matters
Two-wheel drive can reduce drivetrain complexity and maintenance, and some drivers prefer its handling character. It can also be excellent on prepared surfaces.
The catalog stores drivetrain as a filter rather than treating 4WD as automatically superior.