It doesn't work like that. Xbox doesn't have war paint not by choice, but it does have Tek Rex by choice. Why do people have to throw the fact that PC has war paint in people's faces, when it is not a decision that was made by choice.
There is no reason why both console and PC won't get this tbh. The Xbox have the Rex which most likely means it will get the Giga, plus the fact this is also promoted over on the Steam forums probably means it will be on PC too.