headshots even out the field, light armor can be killed one headshot with a sniper rifle and it would take 3 or 4 to kill someone with heavy armor. light armor is harder to hit and heavy is easyer so it evens out the playing field.
I mean a light armor has less access to heavy weapons so they wont stand a chance against heavy armors and heavy armors are not going to be hard to control there just going to be slower giving them better accuracy!!!!!!!!