I'm not as annoyed as SB is about the armor issue, but he does bring up a good point.
If you are going to fight legions of dangerous enemies, you should cover yourself as well as possible.
Mortal Kombat Deception proved this. On Baraka's ending, he kills Mileena by slicing her in half through her exposed mid riff.
I was saying "Well if only she wore more armor she would've died later..."