Is nothing That relates them to Gundam (like a small nod to it in the design) other than the colors, would have been nice to do a Zaku design individually and not recycle the Tuna, as well why the Prospex logo? For a true recreation I would have 1. A zaku design (other whatever gundam it is) and the Prospex replaced with the logo of the military organization that owns these gundams primarily (forgive me for not knowing but its been ages since ive watches gundam) along with a special touch for pre orderers with their name or a slogan engraved in a gundam style script either on the dial or on the bracelet.
But 1000% agreed id rather buy a Rolex, GS (do they still sell at a good msrp or have we shifted the GS to Credor msrp?) or Cartier