The second eBay link is for an aftermarket towbar, the first is genuine Ford.
I would only go by the manufacturers recomendations who have obviously engineered, crash and other various tests the vehicle. Who knows what sort of testing the others have done.
The only available towing parts from Ford for a 2014 Mondeo are listed below:
Hatch towbar: MA 19A009 AB
Wagon/Sedan towbar: MA 19A009 BC
Goose Neck: MA 19B011 A
Load Levelling Kit: MA 19L009 A (2.0L DURATORQ DI OR 2.5L DURATEC-ST (220PS) - VI5)
Towing Module: AM2J 19H517 AC
Wagon Wiring: AM8S7J 15A416 AA
Sedan/hatch Wiring: R6 145 D
Tow ball: U0 19B012 A
Hardware Fitting Kit: MA 19H009 A
As per the owners manual the load limits are below. So the only difference to be able to tow 1600 kgs is with the load levelling kit, otherwise its 1200 kgs (with braked trailer of course).
MC Mondeo Towing 2.JPG