Mileena doesn't always say the same thing after her X-Ray, she sometimes whispers ''did that hurt?''. I play with Mileena often, I've never heard her say that in the PS3 version.
when reptile uses his x ray he sticks his whole hand in their face basically but you cant notice it too much and when smoke does his smoked out fatality once again he uses the whole hand instead of two fingers. thats all my eyes saw that noticed some difference