Play Monster Hunter!
i know but why ? why tone them down
No you misunderstand.
I'll just quote the original article to make it easier then explaining it myself.
Third, well, just about everything else will look a little better, too. “The original source art files had super-crazy-detailed textures,” NetherRealm senior producer Adam Urbano told GamesBeat. “We had to down-rez them to play on last-gen consoles, but for the PlayStation 4, we are able to get much closer to the source material for the actual in-game content. So the textures on the characters are probably about 4X what they were on the PS3.”