You probably need to remember there is only a little over 100 HP going to the rear wheels. Its been my experiance that Nissan is pretty optimistic when it comes to what they say their trucks will tow. I've had to tow trailers quite a bit with my truck and even though it will get the job done I've never felt like it was having a easy time doing it. Small trailers loaded with a couple of mowers it will pull ok anything much heavier and your probably going to really feel it back there and if I'm not mistaken I think two wheel drives have even higher gear ratios than four wheelers.