Immortal
Blind justice....
Probably more practical and realistic reason for almost the same body type for all females(and males to a degree) have everything to do with animations for streamlining the process and consistency.
All of them uses probably the same 1-2 skeleton/rigging for all the animations which in turn is used for all those flashy Fatalities, Brutalities and Fatal Blows. It's much easier and faster to do it once and have it done for all than do it for every single one. In a game of this size its a huge time saving for the company.
Efficiency and time(money) saving is the name of the game(business).
All of them uses probably the same 1-2 skeleton/rigging for all the animations which in turn is used for all those flashy Fatalities, Brutalities and Fatal Blows. It's much easier and faster to do it once and have it done for all than do it for every single one. In a game of this size its a huge time saving for the company.
Efficiency and time(money) saving is the name of the game(business).