Vitara has a low range transfer case, locking differentials, good ground clearance etc. The Honda makes do with a viscous coupling and electronics, it is primarily front wheel driven until grip is lost. The problem is that power is only sent to the rear wheels once the front wheels have started spinning, not the best solution for off roading. You could easily get stuck before the rear wheels are being driven, also the fluid in viscous couplings can overheat and replacing the coupling is apparently quite expensive.
I'd still have the Honda though, unless I need to do serious off road driving.