I haven't driven a Titan, but I have driven plenty of other Yank 'SUVs' and 'Pickups' during my time living in USA, and I honestly believe most on this forum would be bitterly dissapointed if they drove any of them. Most Nth American SUVs seem to be aimed at improving winter road (snow and ice) traction, not off-road ability, with some obvious exceptions - ie many Jeep models. Then again, 4WDing in USA is often referred to as 'Jeeping' - I wonder how that came about!
Think of how well one of the worlds best ever selling 4WDs performs in the Australian market - the Ford Explorer... No sooner had Aussies taken it offroad than it developed the nick-name the Exploder... It just wasn't designed for what we expect of a 4WD. Instead, it was designed to accomodate massive butts, ride with cadillac type comfort (think wallowing all over the road for 100m after hitting a pot hole) and enable the average soccer mum to be unphased by a hint of snow - they can just turn a little dial and engage 4WD on the fly.
Landcruiser's sell poorly in USA (too expensive due to all that offroad engineering and not big enough) and Nissan doesn't even try to sell the Patrol. Just another example of the vehicles being designed for a very different purpose.
The Nissan Armada by the way, dwarfs the Pathfinder. It may look similar, but it is comparible in size to a Ford Expedition (Explorer's big brother). If you really want a mega sized American tank, why not look at a Ford Excursion. These things are essentially a wagon varient of the F250. From memory, they were available hopelessly underpowered with about a 5.4 or 5.7L? V8, the 7.3L Powerstroke turbo diesel, and becuase Americans much prefer their gasoline, the favourite powerplant was a (6.8L from memory) V10 petrol. I think they were rated for about 10 or 11K lbs towing, which is just enough for them to tow an adequate sized fuel tanker...
Again, I haven't driven a Titan, but of all of the other large Nth American SUVs / Pickups I have driven, it was pretty obvious that the big engines were a bare necessity to compensate for their overweight construction - I doubt any of them could drag off a Toyota Tarago...