Having Miranda lead the second attack team in the suicide mission apparently shows that her 'catsuit' is more than just a simple catsuit. Upon exiting the door she takes a shot into her gut, doubling over for a moment. She shrugs it off and is able to continue on. But using somebody like Zaeed, he takes the same shot, in FULL ARMOR, and dies.....so clearly her catsuit must be more than spandex.....apparently it has some armor values included within....
So apparently people just see her more as 'eye candy' that shouldn't be allowed on a battlefield because of the way she dresses. But in reality, she's taking the same shots from weapons and surviving, when the most hardened mercenaries, in full armor, are killed.