While the sorento has a 2 tonne rated capacity, that claim is actually a load of crap. The maximum weight you can place on the towball is 100kgs, only five percent of the maximum tow weight. I don't understand how these manufacturers get away with it. The towed vehicle would be swinging around like crazy. Santa Fe, Mazda CX-9 are the same. A good rule of thumb is ten percent, which would mean the ball weight on these vehicles should be around 200kgs. I would be happy with that down weight and towing capacity.
However, at 100kgs, pretty much any Australian caravan on the market (occasionally), a family sized boat (dream), or any big box trailer over a tonne (most often), can't be safely towed by any of the above vehicles. Not because of limits to towing capacity, but their lame down weight capacity on the ball. They can't really cope with anything more than a 6x4 box trailer.
The Pajero Sport has a 3 tonne towing capacity and a 300kg ball weight.