I tow my 2015 Open Range 216 with a 2013 Platinum Armada. The Armada is rated for 9100 lbs and it tows my TT just fine but the mileage sucks. Because the Armada generates is best torque at around 2700-3000 RPM I find I have to drive in 3rd most of the time with occasional 4th in the flats of Florida. I have to drop to 2nd to make the kills of TN and NC. The Armada likes for you to keep the RPMs up there. My mileage runs 8.5 to 9 MPG.
I would guess my TT is around 6K loaded and the TW is around 750. Those are just guesses.
I don't think I'd want to tow anything bigger with the Armada.