In game and renders are two different things. It's just like how the characters in Amrageddon didn't look so pretty in game like they did in the opening sequence video.
Another example would be like, why can the McDonalds burgers look like what they do look like in thier commericals. Looking so decent, well made and look like an actual burger rather than a greeseball sandwich with the meat hanging out of the sides.
It's nothing to get ticked over, people can't be perfect when making video games, am I correct?
Well, thing is, I HATED Reptile's render, but loved his in-game look. Sadly in MK:A, they took his render. Same thing for Scorpion, hated the render, loved the in game look.