The 14,500# GVWR and 22,000# GCWR are the numbers from Ford, and not necessarily how Forest River rates that vehicle. More than likely they rate it to tow, and provide it with a 5,000# hitch. I have read where they are rating their new units up to the 22,000# Ford specified GCWR.
You also have to find out the weight of the vehicle itself,as to how much of a cushion you have on that GVWR number.
That being said, that vehicle shouldn't have any problems towing a 3,600# car.
***** Sorry, I did not see the previous post (or the two before that) when I posted. :h