I think most would disagree. It is not hard to block with any of the assassins. The game says it is, but it really isn't. I pretty much do that same motion with all of my champions so it just felt natural anyways. I don't know if you played in the closed alpha or beta but peacekeeper was just hot garbage. Hit like a freight train and was quick to boot. They needed to do something and i think she is still a tough champion. Just not OP anymore.
The only one I still think has a leg up over all others is the Orochi. All they have to do is spam their quick attacks and forward slash, followed by guard break spam (which is the new cheese by the way) and they have it in the bag. Even other quick classes like peacekeeper and berserker cannot keep up with Orochi attacks. If this slips through I might have to just wait for the inevitable nerf patch and not really play much after launch.