Yes you can break out of the knock down. I have seen players do this against me a lot and guess what? They get full resolve out of it so I'm done in terms of stuns. Operative is paper thin and if they want to have this high damage output, they're heals are pretty much worthless so all those arguments for that is irrational. Op / Scoundrel are PVP glass cannons. They have to be very selective of their target, which is why they're are a lot of bad players failing with the class. It doesn't matter if I can get a lot of damage to a single player in a short time if I have very few ways of surviving medium / long ranged combat (without hiding or relying on very short term skills like a 3 second evasion). 2 minute cool down on the vanish, hardly a spam ability and it can take a very long time to re stealth if I am stuck in combat because my target didn't die or someone is attacking me. I saw a comment about putting a DOT on an op / scoundrel, this is the best counter to us and I see the really long term ones used a lot on me. If I stealth, it breaks me out when I take the DOT damage (can't cleanse non-toxins), rendering me unable to use my opener (unless I pop a 2 minute cool down for vanish and attack instantly). The DOT means I am just stuck out in the open and taking a ton of damage from every direction because of how squishy an OP is. If I try to attack an enemy and his team mates are just a little aware of what's going on, then I won't get my kill and will probably die in seconds. It's a very situational stealth class and it requires timing and preparation. Don't try to comment on a class that you have never played with. You get to see all the highlights but never notice the ton of drawbacks.