Two SUVs with more similarities, such as the body structure, ground shadow size, and maximum occupancy, than differences, like the starting price, horsepower, fuel economy, and height. First of all, there is a $7,535 difference in the base MSRP. The 2015 Nissan Armada has a higher starting price than the 2016 GMC Acadia. Also, the 2015 Armada has a more powerful engine than the 2016 Acadia, and it gets 3 fewer miles on a gallon of fuel. And finally, the Acadia is slightly shorter than the Armada. Among similarities are the body structure, ground shadow size, and maximum occupancy.