Several people tow with either the Armada or the QX56. Both are the same vehicle, the QX just has a bucket of money sitting in the back seat.
First, Rich Luhr (Rluhr here) towed for many years with his Armada a 30' Safari. He did get a Hensley Arrow hitch, since the Armada has a relatively short wheelbase. It towed the Safari very well.
Second, one of my customers (Bab here) has a new QX56 that he uses to tow his new 27' (I think it's a Flying Cloud). He uses a ProPride hitch, and has no problems towing it.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.