I don't know what you've "studied", but they do ALOT. I have a similar setup as yours. 2011 GMC 1500 with a TT that is 5450lbs dry (Im assuming your 5200lb is dry). Tow package with my truck too.
Without the WD hitch the back end of truck sits a good ways down as does the tongue of the trailer. A "v" at the hitch. With WD it is perfectly level, and tows great. Anti Sway is a must too. First time you get passed by a semi on the freeway or a large gust of wind, you'll be wishing you had it for sure. Trust me, and probably everyone who posts in reply, it is a very necessary piece of equipment. Don't skimp.
Mike