I don't think the length difference will matter, while towing with your full size 1/2 ton. Both trailers weigh similar, and will have the same width front. One persons description of the tow, can be much different from another person driving/towing the same rig.
Someone like Grit above, or even myself, might say the tow was not too bad, sure could have used more power. The next driver, not used to towing with a light truck, with less than adequate power/gearing may say never again.
IMO, the 4.6 with 355s is not going to be enough, for anything more than short distance towing, with either of those trailers.
Jerry
