Talk:Mods 2.0/@comment-218.186.15.10-20130401051347/@comment-96.35.83.141-20130401070035

I think the stun mechanics work something like this, your weapon has a stun rating which is higher or lower for different weapons with heavier weapons the stun rating is much higher and lighter have almost none. The mods for it increase the rating. Bosses have a higher resistance to stuns and the like.

Keep in mind this only speculation and experience, nothing concrete.