There is already a Game of Thrones mod in the making(And in beta). What seperates this one from it?
Besides the fact your here trolling?
This is Legionaire's mod, his team has some of the best modding talent on it. The mod you mentioned has mainly one man working on it.
Secondly, the team is devoting resources to making each army unique, with units having distinct styles and armors.
Third, the team is attempting to factor in new mechanics such as "toll structures" that would act like the Twins, Moat Cailin, the Gold Tooth, and the Bloody Gate.
There are numerous other mechanics in the work, buts its all in the air at the moment. Suffice to say the beta will likely feature only nominal differences from the best mods, but version 1.0 will be an excellent product.