My opinion is that they are terrible players, or players with group spec/RA complaining a pure solo spec toon is beating them. Because god, if I could beat asn with my melee ranger, there are no excuses for a tank to lose...
You have no idea about how vital is the debuff ws/c because you are bunch of winners who didn't play the class. The class is balanced around its poisons. If someone purge and you don't reapply ws/c, you are dead, it's plain simple.
People should stop speaking about things they have no idea about. Cadebrennus posts everywhere, but he has no idea about balance in this game. His ranger guide was full of mistakes and misconceptions (recommandation to use a slow off hand...) and now he gives his opinions about assassins (and lol he tells us he beats rr11 with his rr2 merc, BUT ASN OP!!!!!!!!!!!!!! I think you make the case for a tank nerf instead lol).
Gotwqqd has no idea about game balance either, and my guess his weird creepy uncle must have played an asn in the past, so he holds an irrational grudge against the class.
Let the real solo tank tell you about the assassins, and they will tell you they are in the right spot. I even beat Eriel (rr11) 1vs1 today on my warrior (rr4, purge 2 deter9 mop 2 mob 2).
Git gut scrubs and stop wasting space with terrible ideas.