The OP's truck and new trailer may pull "just fine" without WD hitch.
But unless he tries it both ways, w/o WD hitch, then back to back with a WD hitch, he will never know the difference.
Which is why I posted the way I did earlier. I've towed two different trailers with this same truck, with and w/o WD hitch.
Honestly, I would have little hesitation pulling my travel trailer simply on the ball behind the Frontier. But I prefer the way it drives with the BlueOx in place.
Simply put, I don't mind the added few minutes it takes to hitch and unhitch.
That's my two cents on it.