It gets low profiled (the major weakness). And please look at A list F3... Or Alien's tail
Like Foxy said, everyone has options against her B12 but noone wants to play B12 game properly
I main Sub-Zero. His only option vs B12 is to low profile with his 9 frame d4(not bad a bad option at all), or backdash(accomplishes nothing really). The Problem with D4 is that it's 9 frames and if she decides to do her 8 frame d3, she will always beat him out. It's really hard to fight her because:
1. You can't clone past midscreen because of rapid fire sais
2. You came jump because roll
3. You can't slide because low sai
4. Sub-Zero can't really do jack shit after a blocked B12, because she can use her 6 frame D1 that will STILL beat his 9 frame pokes because B12 is only -2
5. She easily out footsies him everywhere on screen
Mileena didn't need this, all she needed was the poke buffs. I know the good Mileenas didn't want all this, but since the bad ones complained for a year they got it.
I'm done using Sub against Mileena, I use my second character here. Characters like Mileena is why I don't want Alien nerfed into the ground because she is just as bullshit as he is.
Also: I don't have anything against you, I just saw this as an opportunity to get this out.