I have towed a 6x12 cargo trailer (loaded to 3500+ lbs) extensively with my similarly powered Highlander. I think you would find the Pathy to have enough power.
However, be sure to search the Nissan forums first for owners' experiences with the CVT. When I looked 3 months ago (because I was considering the new Pathfinder to replace my HL), I read many complaints about transmission 'judder' or apparent slippage when rolling at about 2-3 mph and then trying to accelerate hard. Rather scary when trying to pull through an intersection.
I am now planning to buy a Jeep Grand Cherokee this summer.
Mike G.
Liberty is meaningless where the right to utter one's thoughts and opinions has ceased to exist. That, of all rights, is the dread of tyrants. --Frederick Douglass
photo: Yosemite Valley view from Taft Point