Basically the same platform. But, if I recall correctly, the changes they make for this market neuter it...
The Nissan Patrol has a more rugged and off-road oriented appearance, while the Nissan Armada has a more refined and luxurious look.
The Nissan Patrol has a higher ground clearance, a larger fuel tank, a stronger front differential and a rear differential lock, while the Nissan Armada has a lower ground clearance, a smaller fuel tank, a weaker front differential and no rear differential lock.
The Nissan Patrol has a different final drive ratio (3.36:1) than the Nissan Armada (2.94:1), which means that the Patrol has better off-road control and towing capacity, while the Armada has better fuel mileage on the highway.
The Nissan Patrol has some features that are not available on the Nissan Armada, such as a hydraulic body motion control system, a terrain response system, a crawl control system