Even as an owner, I would not rely on the Honda Element's real-time 4WD system, since it is engaged passively, with no driver intervention at all. It only engages when the wheels slip, and disengages as soon as the wheels are all turning at the same speed. In my experience, I would put it this way. Honda's 4WD will try to keep you from getting stuck, but it won't get you UN-stuck. The frequent on-off of the passive system will likely spin you into a bigger mess in the snow.
If you were dealing with a great deal of snowfall, I would trust the active 4WD system on the Jeep more.