Two things:
> "If you think it's overpowered, just use it" ~ Crytek on the topic of Auto Armor
> "Auto Armor is not changing" ~ Crytek's final stance on Auto Armor
It's up to server admins to take things into their own hands, enforce rules and ban things that are overpowered from their server (e.g. lvl 50 AA and Rhino).
But what if you play on console.
Buy a good PC! It's super fun!