Forum talk:Neekerivittu/@comment-65.49.14.83-20121107200337/@comment-186.59.119.233-20121108024220

At 50% health (when Zed's passive triggers) it will deal twice as much damage as Jarvan's (Assumming they're on the same level). So, since Zed get's twice the damage, but only for the second half of the fight, we could say they both deal the same damage.

Now, that is a lie: the lower the health on the target, the more effective Zed's passive will be when compared to Jarvan's. I guess that explains the 4 s CD difference.

In conclusion, they're on par, and serve different roles, as intended.