Always seen Wu-tang Shaolin Style as a honorary member of the Def Jam games. Kind of like a cousin, since it also follows the Rapper's fighting in a Takken/WWE type form. (Let it take Icon's spot lol)
There will always be a Big3. There's always a company the focus on Innovation AKA Anbernic the Nintendo of emulation. One that focuses on Power AKA Ayn the Xbox of emulation and the popular kid AKA Retroid the Playstation of emulation.