My only problem with this is that its RNG. My suggestions are more predictable. If the enemy has 50% armor you will apply certain forms of CC on them, it just wont be a stun.
Also mods disable achievements and this triggers me greatly.
Eh, I couldn't care less about achievements. All to their own, but you're missing out on some great content in the workshop.
And where one person sees RNG, I see a die roll with appropriate bonuses. RPGs are built on them, I don't see the problem. But, as I said earlier, all to their own. Happy gaming.